| Osbarn | David | 628 | Illustrated History of Sacramento County - 1890 |
| Osborn | David H | 913 | History of Sacramento County - 1923 |
| Osborn | Oscar W | 259 | History of El Dorado County - 1883 |
| Osborn | William E | 753 | History of Yolo County - 1913 |
| Osborn | William M. | 1239 | Historical and Biographical Record of So. Calif. - 1902 |
| Osborn | Walter | 240 | History of Kern County - 1914 |
| Osborn | William | 786 | An Illustrated History of Los Angeles County - 1889 |
| Osborn | W. H. | 447 | History of Merced County - 1925 |
| Osborn | R F. | V.ii-676 | The Bay of San Francisco - A History - 1892 |
| Osborn | Lewis | 508 | History of Marin County - 1880 |
| Osborn | L. C. | 475 | History of Kern County - 1929 |
| Osborn | John B. | 1044 | History of the San Joaquin Valley - 1905 |
| Osborn | George K. (M. D.) | 439 | History of Mendoncino & Lake Counties - 1914 |
| Osborn | Henry A | 218 | History of Stanislaus County - 1881 |
| Osborn | Mary E. Clark | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Margaret Dyer | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Sarah Evans | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Rolla | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Oliver | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Oliver P. | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Maud Carter | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Charles H. | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Minta Berry | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Irma | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Audra | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Earl | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Edna Hannaford | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Ellen Marksbury | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Frank (B) | 359 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Gladys Cary | 360 | History of Tulare & Kings Cos. - 1913 |
| Osborn | Jeptha | 83 | History of Santa Clara County - 1922 |
| Osborn | Family | 81, 138 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Osborn | A. P. | 136 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Osborn | Butler | 1 #53 6/62 | Los Tulares: 1948 - 11/86 |
| Osborn | Mary | 2 #21 12/54 | Los Tulares: 1948 - 11/86 |
| Osborn | Joe | 2 #65 6/65 | Los Tulares: 1948 - 11/86 |
| Osborn | Frank | 2 #65 6/65 | Los Tulares: 1948 - 11/86 |
| Osborn | Butler | 2 #65 6/65 | Los Tulares: 1948 - 11/86 |
| Osborn | Bill | 2 #14 3/53 | Los Tulares: 1948 - 11/86 |
| Osborn | Charles | 5-7 #47 3/61 | Los Tulares: 1948 - 11/86 |
| OSBORN | Claude Mrs | 52 | Dinuba War Album - 1944 |
| Osborn | Dorris | 245, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osborn | Mabel | 245, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osborn | Frank | 245, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osborn | Charles | 245, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osborn | Leonard | 245, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osborn | E. A. Rev. | 1091 | History of Butte Co. - 1918 |
| Osborn | Bill | 12 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Osborn | Robert T | 915 | History of Contra Costa - 1926 |
| Osborn | T. | 195 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Osborn | Mr. | 49 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Osborn | D. M. | 391 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Osborn | Johnnie W | 112 | Tulare Community War Album - 1945 |
| Osborn | Laura M | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Perry | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Rebecca Jane (Moore) | 20, 24, 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Sarah | 11 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Temperance Jane | 11, 21 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Oliver | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Oliver Perry | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Margaret | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Ellen Patricia (Pet) | 11, 21, 22, 24 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Ashbel Post | 11, 12, 19, 20, 24, 31, 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Horace | 33 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Laura Annie | 19, 22 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Lilly Belle | 20, 22 | Crabtree: Tule River Patriarchs - Early Springville History |
| Osborn | Mary | 43 | Alta Pioneers - 1924 - Tulare Co. |
| Osborn | William T | 4c, 43 | Alta Pioneers - 1924 - Tulare Co. |
| Osborn | George William | 158 | History of Sonoma County - 1937 |
| Osborne | W. T. | 176 | History of Tulare Co. - 1883 |
| Osborne | Arthur H. T. | 1433 | History of Orange County - 1921 |
| Osborne | Frederick Charles | 821 | History of Placer & Nevada Cos. - 1924 |
| Osborne | George | 788 | An Illustrated History of Los Angeles County - 1889 |
| Osborne | H. Z. | 144 | An Illustrated History of Los Angeles County - 1889 |
| Osborne | J. E. | 457 | History of Ventura Co. - 1926 |
| Osborne | J. W | 403 | Biographical History of Northern California - 1891 - Ver. 1 |
| Osborne | A. E. Dr. | 193, 257, 298 | History of Santa Clara County - 1922 |
| Osborne | Lloyd | 300 | History of Santa Clara County - 1922 |
| Osborne | A. E. Mrs. | 227 | History of Santa Clara County - 1922 |
| Osborne | Orlando C. | ~ | Society of California Pioneers - 1912 |
| Osborne | S. L. G. | ~ | Society of California Pioneers - 1912 |
| Osborne | Jessie | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Gordon | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Robert | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Reginald | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | David | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | James (M.D.) | 142S, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Annie Freeman | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Janet Wallace | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Edward Wallace | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Ethel | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Florence | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Harold | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | Alexander | 142, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osborne | A. E. M. D (B) | 570 | History of Santa Clara County - 1922 |
| Osburn | R. M. | 797 | History of the San Joaquin Valley - 1905 |
| Osburn | Ashbel P. | 1235 | History of the San Joaquin Valley - 1905 |
| Osburn | E. H. Mrs. | 310 | History of Santa Clara County - 1922 |
| Osburn | Robert M. (B) | 816 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Osburn | Miss (Van Tassel) | 816 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Osen | George H. | 605 | Biographical Record of Coast Counties - 1904 - Ver. 1 |
| Osen | George | 242 | History of Santa Clara County - 1922 |
| Osenbaugh | Charles M Prof. | 180, 182 | History of Santa Clara County - 1922 |
| Osenbaugh | C. M. Mrs. | 188 | History of Santa Clara County - 1922 |
| Oser | Carl W | 106 | History of San Joaquin County - 1909 |
| Oser | M. | 717 | History of Butte Co. - 1918 |
| Oser | Carl W | 756 | History of San Joaquin Co. - 1923 |
| Osgood | Brothers | V.ii-594 | The Bay of San Francisco - A History - 1892 |
| Osgood | Ada L. (Mrs.) | 304 | History of Sacramento County - 1923 |
| Osgood | Henry M | 142 | History of San Luis Obispo Co. - 1883 |
| Osgood | Henry M. | 79 | History of San Luis Obispo Co. and Environs- 1917 |
| Osgood | L. H | 493 | History of Plumas, Lassen & Sierra Cos. - 1882 |
| Osgood | Luther E | 955 | History of Alameda County - 1883 |
| Osgood | Luther E. | 877 | Biographical Record of Coast Counties - 1904 - Ver. 1 |
| Osgood | Hiram P. | ~ | Society of California Pioneers - 1912 |
| Osgood | Silas R. | ~ | Society of California Pioneers - 1912 |
| Osgood | Mr. | 273, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osgood | Maria Cecelia | 348, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Osgood | Frances L. | 311, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Osgood | James C. | 338, 655 | History of Butte Co. - 1918 |
| Osgoodby | John | 579 | An Illustrated History of Los Angeles County - 1889 |
| Osgoodby | Andrew | 258 | History of Pomona Valley - 1920 |
| Osgoodby | George | 258 | History of Pomona Valley - 1920 |
| Osgoodby | George | 580 | An Illustrated History of Los Angeles County - 1889 |
| Oshorn | R. N | 892 | History of Los Angeles Harbor District |
| Osio | A. M | 761 | History of Monterey & San Benito Cos. - 1910 |
| Osio | Salvador | 39 | History of Butte Co. - 1918 |
| Osler | C. H. | 229 | History of Merced, Stanislaus, Calaveras, Tuolumne & Mariposa - 1892 |
| Oslund | John | 1962 - Vol. II | History of Fresno County - 1919 |
| Osmer | George (B) | 678 | History of Santa Clara County - 1922 |
| Osmon | Randy | 221 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Osmon | Roland | 221 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Osmon | Rolanda | 221 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Osmun | J. Allen (Dr.) | 1947 | History of South Coast Counties - 1907 |
| Osmund | Michael | 1916 | History of South Coast Counties - 1907 |
| Osorio | Ruben | 115 | Orosi: In the beginning: 1888-1988 |
| Ospital | Jean | 1490 | History of San Joaquin Co. - 1923 |
| Ossenbriiggen | Matthias | 1197 | History of Butte Co. - 1918 |
| Ossenbruggen | J. J. | Vol. 3-40 | History of Sacramento Valley - 1931 |
| Ossenbruggen | Peter | 606 | Biographical Record of the Sacramento Valley - 1906 |
| Ossmann | Tobias | 664 | Biographical History of Northern California - 1891 - Ver. 1 |
| Ostenberg | Zeno | 275 | History of Santa Clara County - 1922 |
| Ostenberg | Pontus (B) | 1040 | History of Santa Clara County - 1922 |
| Ostenburch | C. M. | 318 | History of Butte Co. - 1918 |
| Ostendorf | Johanna (Mrs.) | 673 - Vol. I | History of Fresno County - 1919 |
| Oster | Frank F | 314 | Ingersoll's San Bernardino Co. - 1904 |
| Ostergard | Harold | 851 | History of Merced County - 1925 |
| Osterhout | Sarah Herlinger | 156 | Alta Pioneers - 1924 - Tulare Co. |
| Osterhout | George W | 156, 173 | Alta Pioneers - 1924 - Tulare Co. |
| Osterhout | Frank Edward | 156 | Alta Pioneers - 1924 - Tulare Co. |
| Osterhout | Nora Parlier | 156 | Alta Pioneers - 1924 - Tulare Co. |
| Osterhout | Lyman | 156 | Alta Pioneers - 1924 - Tulare Co. |
| Osterman | Bennie W. | 1292 | History of Orange County - 1921 |
| Osterman | George Dewey | Vol. III - 256 | History of Orange County - 1931 |
| Osterman | John | 203 | History of Orange County - 1911 |
| Osterman | John | Vol. II -306 | History of Orange County - 1931 |
| Osterman | W. S. | 100, 240 | History of Santa Clara County - 1922 |
| Osterman | F. W. | 192 | History of Santa Clara County - 1922 |
| Osterman | Fred W (B) | 973 | History of Santa Clara County - 1922 |
| Ostman | Charles | 913 | History of Sacramento County - 1923 |
| Ostrander | Frank M. | 890 | History of Merced County - 1925 |
| Ostrander | Fred G. (Judge) | 321 | History of the San Joaquin Valley - 1905 |
| Ostrander | H J | 120 | History of the Merced County - 1881 |
| Ostrander | Harvey J. | 528 | History of the San Joaquin Valley - 1905 |
| Ostrander | J. A | 500 | Biographical History of Northern California - 1891 - Ver. 2 |
| Ostrander | J. A | 522 | Biographical History of Northern California - 1891 - Ver. 1 |
| Ostrander | P. T. | 359 | History of Tulare & Kings Cos. - 1913 |
| Ostrander | Harry J. | ~ | Society of California Pioneers - 1912 |
| Ostrander | P. T. | 129 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Ostrom | Charles Warren | Vol. 4 - 36 | California of the South - 1933 |
| Ostrom | G. P | 383 | History of Merced, Stanislaus, Calaveras, Tuolumne & Mariposa - 1892 |
| Ostrom | J. P. | 272 | Fresno County: The Pioneer Years to 1900- 1984 |
| Ostrom | G. T | 93 | History of Alameda Co. - 1928 |
| Ostrom | A. C | 93 | History of Alameda Co. - 1928 |
| Ostrom | George W | 1191 | History of Yuba and Sutter Counties - 1924 |
| Osuna | Louis | 210 | History of Tulare Co. - 1926 |
| Osuna | Luciano | 327-28 | Genocide & Vendetta: The Round Valley Wars |
| Osvald | Julia K. (Mrs.) | 592 | History of Stanislaus County - 1921 |
| Oswald | Wallace Edwin | 1169 | History of Orange County - 1921 |
| Oswald | John S | 537 | History of Kern County - 1914 |
| Otar | J. N | 253 | History of Monterey & Santa Cruz Counties - 1925 |
| Othernan | Anthony H. | ~ | Society of California Pioneers - 1912 |
| Othet | Thomas | 603 | History of Placer & Nevada Cos. - 1924 |
| Otis | G. E. | 537 | An Illustrated History of Southern California - 1890 |
| Otis | George B. | 1197 | History of the San Joaquin Valley - 1905 |
| Otis | George B. | 171, 343 | Fresno County: The Pioneer Years to 1900- 1984 |
| Otis | George Buell | 783 - Vol. I | History of Fresno County - 1919 |
| Otis | George E | 315 | Ingersoll's San Bernardino Co. - 1904 |
| Otis | H. G. | 151 | An Illustrated History of Los Angeles County - 1889 |
| Otis | William E | 869 | History of Orange County - 1921 |
| Otis | Frank | 5 | History of Alameda Co. - 1928 |
| Otis | Stephen | ~ | Society of California Pioneers - 1912 |
| Otis | Sid | 367 | History of Kings Co. - 1940 |
| Otis | George B | 46 | Alta Pioneers - 1924 - Tulare Co. |
| Ott | Martin | 104 | History of San Joaquin Co. - 1879 |
| Ott | Frank H | 2032 | History of South Coast Counties - 1907 |
| Ott | Chris | 628 | History of the San Joaquin Valley - 1905 |
| Ott | Eleanor Cramer | 855 | History of Tulare & Kings Cos. - 1913 |
| Ott | Martin | 413 | An Illustrated History of San Joaquin County, California |
| Ott | John | 673 | History of Contra Costa - 1926 |
| Ott | Frederick William | 1490 | History of San Joaquin Co. - 1923 |
| Ott | Adam | 248-Vol.1 | History of Santa Barbara County - 1927 |
| Ottaman | Mr. | 688 | History of Tulare & Kings Cos. - 1913 |
| Otte | Frederick W | 2134 | History of South Coast Counties - 1907 |
| Otte | Friederich | 993 | History of South Coast Counties - 1907 |
| Otter | Charles | 221 | History of Santa Clara County - 1922 |
| Otter | Floyd | 2 #112 12/76 | Los Tulares: 1948 - 11/86 |
| Otter | Floyd | 4 #145 9/84 | Los Tulares: 1948 - 11/86 |
| Otter | Floyd | 4 #129 12/80 | Los Tulares: 1948 - 11/86 |
| Otter | Floyd | 4 #50 12/61 | Los Tulares: 1948 - 11/86 |
| Otter | Floyd | 3 #62 9/64 | Los Tulares: 1948 - 11/86 |
| Otter | Hugo W (B) | 1211 | History of Santa Clara County - 1922 |
| Otterbeck | Elias E | 776 | History of Solano & Napa - 1912 |
| Otterson | Charles F | 745 | History of Solano & Napa - 1912 |
| Ottinger | Douglas | 37 | Genocide & Vendetta: The Round Valley Wars |
| Ottmann | P. R. | 150 | An Illustrated History of Southern California - 1890 |
| Ottmer | Florence H. (M. D.) | 310 | History of Humboldt County - 1915 |
| Ottmer | Florence H. (M. D.) | 857 | Biographical Record of Coast Counties - 1904 - Ver. 2 |
| Ottney | Garth H | 446 | History of Yuba and Sutter Counties - 1924 |
| Otto | George F | 16-17 | History of San Diego County - 1936 |
| Otto | P. J. | Vol. 3 - 167 | California of the South - 1933 |
| Otto | John G | 622 | History of Santa Clara County - 1881 |
| Otto | Charles E | 785 | History of Pomona Valley - 1920 |
| Otto | Anthony | 478 | History of the Sierras - 1906 |
| Otto | Andreas | 1570 | History of the San Joaquin Valley - 1905 |
| Otto | John G. (Prof.) | 757 | Biographical Record of Coast Counties - 1904 - Ver. 1 |
| Otto | Miss Noble | 276 | History of Tulare & Kings Cos. - 1913 |
| Otto | A. (B) | 466 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Otto | Elsie (Weinbeck) | 466 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Ottrner | Henry C. (M. D.) | 461 | History of Sonoma County - 1911 |
| Ottson | C. | 550 | History of Mendoncino County - 1880 |
| Ough | Family | 99 | Pioneer Families of Ducor, California |
| Ough | H. S. | 95 | Pioneer Families of Ducor, California |
| Ough | Chester | 95 | Pioneer Families of Ducor, California |
| Oughton | H. | 52 | Pioneer Families of Ducor, California |
| Oullahan | Denis J. (Hon.) | 76 | History of San Joaquin County - 1909 |
| Oullahan | Edward | 252 | History of San Joaquin County - 1909 |
| Oullahan | D. J. | 93 | An Illustrated History of San Joaquin County, California |
| Oullahan | Edward | 392 | An Illustrated History of San Joaquin County, California |
| Oullahan | Alexander C | 347 | History of San Joaquin Co. - 1923 |
| Oullahan | Robert B | 1079 | History of San Joaquin Co. - 1923 |
| Ousley | S. M. | 622 | History of Santa Clara County - 1881 |
| Ousley | Samuel M (B) | 407 | History of Santa Clara County - 1922 |
| Ousley | G. W. | 140,141,146-48 | Genocide & Vendetta: The Round Valley Wars |
| Oussani | Joseph | 2129 - Vol. II | History of Fresno County - 1919 |
| Oust | John E. Jr. | 871 | History of Merced County - 1925 |
| Outhet | John | 436 | History of the San Joaquin Valley - 1905 |
| Outland | E. G. | 529 | History of Ventura Co. - 1926 |
| Ovelletle | William | 204 (Note) | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Oven | Gerald | 4 #143 6/84 | Los Tulares: 1948 - 11/86 |
| Over | J. Frank | 2086 | History of South Coast Counties - 1907 |
| Overacker | Adam A | 956 | History of Alameda County - 1883 |
| Overacker | C. B. | V.ii-665 | The Bay of San Francisco - A History - 1892 |
| Overacker | Howard | 697 | Biographical Record of Coast Counties - 1904 - Ver. 1 |
| Overacker | Howard | 956 | History of Alameda County - 1883 |
| Overacker | Ray Howard | Vol. II -148 | History of Orange County - 1931 |
| Overall | Daniel Griffith | 371 | History of Tulare Co. - 1926 |
| Overall | Joseph W | 1511 | History of Kern County - 1914 |
| Overall | Orval | 369 | History of Tulare Co. - 1926 |
| Overall | Miss Hawpe | 429 | History of Tulare & Kings Cos. - 1913 |
| Overall | Sheriff | 303 | History of Tulare & Kings Cos. - 1913 |
| Overall | Orvie | 429 | History of Tulare & Kings Cos. - 1913 |
| Overall | Miss Van Loan | 429 | History of Tulare & Kings Cos. - 1913 |
| Overall | Daniel G. (B) | 428 | History of Tulare & Kings Cos. - 1913 |
| Overall | D. G. | 29, 97, 151, 165, 166, 732 | History of Tulare & Kings Cos. - 1913 |
| Overall | Charity Mason | 428 | History of Tulare & Kings Cos. - 1913 |
| Overall | Mary E. Farrow | 428 | History of Tulare & Kings Cos. - 1913 |
| Overall | Mr. | 43 | History of Tulare & Kings Cos. - 1913 |
| Overall | D. G. | 249 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Overall | Dan | 1 #17 12/53 | Los Tulares: 1948 - 11/86 |
| Overall | Dan | 3 #99 9/73 | Los Tulares: 1948 - 11/86 |
| Overall | Orval | 1 #119 9/78 | Los Tulares: 1948 - 11/86 |
| Overall | Amanda (Van Loan) | 713 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Anna (Van Loan) | 805, 713 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Charity (Mason) | 805 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Cynthia (Hawpe) | 805 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | D. N. | 713 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Daniel Griffith (B) | 196, 510, 805 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Orval | 805 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overall | Dan (Sheriff) | 91 | Alta Pioneers - 1924 - Tulare Co. |
| Overbaugh | A. | 107 | An Illustrated History of Southern California - 1890 |
| Overell | Joseph M | 719; Vol. III | History of Los Angeles and Environs - 1915 |
| Overend | E. J. | V.i-561 | The Bay of San Francisco - A History - 1892 |
| Overfelt | William C. | 1023 | Biographical Record of Coast Counties - 1904 - Ver. 1 |
| Overfelt | Mildred M | 231 | History of Santa Clara County - 1922 |
| Overfelt | Mary | 231 | History of Santa Clara County - 1922 |
| Overfelt | Mary Mrs. (B) | 387 | History of Santa Clara County - 1922 |
| Overfelt | William C (B) | 384 | History of Santa Clara County - 1922 |
| Overfelt | Charles F (B) | 511 | History of Santa Clara County - 1922 |
| Overheiser | W. L. | 624 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overhiser | William L. | 99 | History of San Joaquin Co. - 1879 |
| Overhiser | William L | 254 | History of San Joaquin County - 1909 |
| Overhiser | W. L. | 555 | An Illustrated History of San Joaquin County, California |
| Overholser | John | 974 | History of Mendoncino & Lake Counties - 1914 |
| Overholt | Barbara | 198, 205 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Overholtzer | Samuel A. | 133 | History of San Joaquin Co. - 1879 |
| Overholtzer | J. | 448 | An Illustrated History of San Joaquin County, California |
| Overholtzer | Isaac S | 619 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | Derius Rev. | 543 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | William H | 550 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | Samuel A. Sr | 549 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | Samuel A | 653 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | Jesse I | 745 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overholtzer | Michael N | 558 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overhouse | William D | 639 | History of Yolo County - 1913 |
| Overhouse | William | 876 | History of Yolo County - 1913 |
| Overhouse | Wm | 460 | Biographical History of Northern California - 1891 - Ver. 1 |
| Overhouse | Wm. | 103 | History of Yolo County - 1879 |
| Overhulse | Boyd | 245 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Overhulse | Helena M Mrs. | 425 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Overhulse | Emiline | 245 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Overhulse | Helena A | 245 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Overland | J. H | 225 | History of Kings Co. - 1940 |
| Overman | E. M | 1101 | American Biography and Genealogy - California Edition - 1900? |
| Overman | Joseph A | 428 | History of Orange County - 1911 |
| Overmeyer | M. | 283 | Illustrated History of Sacramento County - 1890 |
| Overmier | N. | 375 | An Illustrated History of Southern California - 1890 |
| Overmyer | Jonathan M. | 1040 | A History of New California - 1905 - 2nd Ed. |
| Overr | Oscar | 117 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Overshiner | Charles David | 744 | History of Orange County - 1921 |
| Overshiner | G. J. | 345 | An Illustrated History of Southern California - 1890 |
| Overshiner | John G | 458 | History of Colusa County - 1891 |
| Overshiner | G. J. | 129 | History of Santa Clara County - 1922 |
| Overstreet | Claude C. | 719 | History of Tulare & Kings Cos. - 1913 |
| Overstreet | Grace S. Houston | 719 | History of Tulare & Kings Cos. - 1913 |
| Overstreet | Mr. | 315 | History of Tulare & Kings Cos. - 1913 |
| Overstreet | Roger L. | 216 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Overstreet | Elsie | 193, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Overstreet | Harry | 193, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Overton | Tom | 105, 222 | Fresno County: The Pioneer Years to 1900- 1984 |
| Overton | A. L | 612 | Biographical History of Northern California - 1891 - Ver. 2 |
| Overton | Albert P | 402 | History of Sonoma County - 1911 |
| Overton | J. | 186 | Fresno County: The Pioneer Years to 1900- 1984 |
| Overton | B. B. | 13 | History of Tulare & Kings Cos. - 1913 |
| Overton | Jacob | 231 | History of Santa Clara County - 1922 |
| Overton | Isaac | ~ | Society of California Pioneers - 1912 |
| Overton | John B. | ~ | Society of California Pioneers - 1912 |
| Overton | Alice Brown | 218, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Overton | Charles P. | 218, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Overton | Miriam | 218, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Overton | J. H. | 714 | Illustrated History of Sonoma County - 1889 |
| Overton | A. P. | 332 | Illustrated History of Sonoma County - 1889 |
| Overton | G. E Capt. | 243 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Overton | Tom | 61 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Overturf | J. R. | Vol. 2-394 | History of Sacramento Valley - 1931 |
| Ovreholtzer | S. A. | 583 | An Illustrated History of Los Angeles County - 1889 |
| Oweger | Frank | 767 | Ingersoll's San Bernardino Co. - 1904 |
| Owen | Richard H. | 992 | History of the San Joaquin Valley - 1905 |
| Owen | James C. | 586 | A History of New California - 1905 - 2nd Ed. |
| Owen | John H. | 661 | History of the San Joaquin Valley - 1905 |
| Owen | R. Owen | 957 | History of Alameda County - 1883 |
| Owen | Richard Thomas | 706 - Vol. I | History of Fresno County - 1919 |
| Owen | T. B. | 710 | American Biography and Genealogy - California Edition - 1900? |
| Owen | Thomas Alonzo | 470 | History of Stanislaus County - 1921 |
| Owen | J. J. (Hon.) | 729 | History of Santa Clara County - 1881 |
| Owen | Ray | 1464 | History of Kern County - 1914 |
| Owen | Jehial | 574 | History of Santa Clara County - 1881 |
| Owen | Tom | 233 | Fresno County: The Pioneer Years to 1900- 1984 |
| Owen | Charles E | 69, 137 | History of Siskiyou County - 1881 |
| Owen | Josiah | 1234 | History of Kern County - 1914 |
| Owen | J A. (M. D.) | 1284 | Biographical Record of the Sacramento Valley - 1906 |
| Owen | Asa | 311 | History of Sacramento County - 1923 |
| Owen | Charles E | 660 | Ingersoll's San Bernardino Co. - 1904 |
| Owen | Charles | 233, 234 | Fresno County: The Pioneer Years to 1900- 1984 |
| Owen | E. W. | 218 | History of Kern County - 1929 |
| Owen | Eben | 641 | Illustrated History of Sacramento County - 1890 |
| Owen | Erwin W | 1230 | History of Kern County - 1914 |
| Owen | Francis M | 1288 | Biographical Record of the Sacramento Valley - 1906 |
| Owen | Harry D | 740 | History of Sacramento County - 1913 |
| Owen | Harry Rowland | 967 | History of Placer & Nevada Cos. - 1924 |
| Owen | C. E. | 653 | An Illustrated History of Southern California - 1890 |
| Owen | W. M. | 132 | History of Santa Clara County - 1922 |
| Owen | James Jerome | 79, 97, 99, 108-110, 120, 128, 129, 130, 171, 246 | History of Santa Clara County - 1922 |
| Owen | Henry W. | 215 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Owen | Marilyn H. | 205 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Owen | Henry | 1 #129 12/80 | Los Tulares: 1948 - 11/86 |
| Owen | Henry | 3 #148 6/85 | Los Tulares: 1948 - 11/86 |
| Owen | Milt | 3 #55 12/62 | Los Tulares: 1948 - 11/86 |
| OWEN | Harold LeRoy | 148 | Dinuba War Album - 1944 |
| OWEN | Richard | 148 | Dinuba War Album - 1944 |
| OWEN | Dick Owen Mr & Mrs | 148 | Dinuba War Album - 1944 |
| OWEN | Charles M. | 148 | Dinuba War Album - 1944 |
| OWEN | Ethel | 148 | Dinuba War Album - 1944 |
| OWEN | Sharon Lee | 148 | Dinuba War Album - 1944 |
| Owen | Arthur | 121, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Owen | Elizabeth Lee Alice | 121, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Owen | J. J. | 18, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Owen | J. R. | 269 | An Illustrated History of San Joaquin County, California |
| Owen | C. E. | 542 | An Illustrated History of San Joaquin County, California |
| Owen | W. A. | 148 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Owen | John D. | 84, 87 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Owen | Richard | 23 | The Way It Was - Tulare Co. - Mitchell - 1998 |
| Owen | Samuel F | 345 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Owen | Miss (Cole) | 348 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owen | W. | 179 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owen | William C. | 194 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owen | C. A. | 348 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owen | John H | 1263 | History of San Joaquin Co. - 1923 |
| Owen | Hugh A | 45, 64 | Orosi: In the beginning: 1888-1988 |
| Owen | Ida LaMarsna | 64, 67 | Pioneer Families of Ducor, California |
| Owen | May | 63 | Pioneer Families of Ducor, California |
| Owen | Walter | 65, 67 | Pioneer Families of Ducor, California |
| Owen | Vernon | 65, 67, 95-98 | Pioneer Families of Ducor, California |
| Owen | Susan Breeding | 64, 65, 94 | Pioneer Families of Ducor, California |
| Owen | Sara Salladay | 659 67, 77, 85, 96, 105 | Pioneer Families of Ducor, California |
| Owen | Richard | 64, 67 | Pioneer Families of Ducor, California |
| Owen | Henry | 64, 65, 67, 77, 81, 85, 96 | Pioneer Families of Ducor, California |
| Owen | Family | 6, 8, 82, 100 | Pioneer Families of Ducor, California |
| Owen | Arlene Carpenter | 64, 65 | Pioneer Families of Ducor, California |
| Owen | Doris | 65, 95, 97 | Pioneer Families of Ducor, California |
| Owen | Dorothy Jewel | 67, 96 | Pioneer Families of Ducor, California |
| Owen | George | 64, 65, 67, 95, 96,98 | Pioneer Families of Ducor, California |
| Owen | James (Thomas) | 64 | Pioneer Families of Ducor, California |
| Owen | Gordon | 65, 67 | Pioneer Families of Ducor, California |
| Owen | Margaret | 63 | Pioneer Families of Ducor, California |
| Owen | Ida | 64 | Pioneer Families of Ducor, California |
| Owen | Wayne | 65 | Pioneer Families of Ducor, California |
| Owen | Irene | 65 | Pioneer Families of Ducor, California |
| Owen | Jewell | 64 | Pioneer Families of Ducor, California |
| Owen | John Davis | 64, 65, 67 | Pioneer Families of Ducor, California |
| Owen | Mae | 67 | Pioneer Families of Ducor, California |
| Owens | Edward | 181 | History of San Bernardino & San Diego Cos. - 1883 |
| Owens | Robert I | 1504 | History of South Coast Counties - 1907 |
| Owens | W. C. | 397 | History of Merced, Stanislaus, Calaveras, Tuolumne & Mariposa - 1892 |
| Owens | Troy M | 1484 | History of Kern County - 1914 |
| Owens | Thomas E | 1546 | History of Kern County - 1914 |
| Owens | Richard | 723 | Biographical History of Northern California - 1891 - Ver. 1 |
| Owens | M T. | 1620 | History of South Coast Counties - 1907 |
| Owens | J. S. | 212 | An Illustrated History of Los Angeles County - 1889 |
| Owens | George | 174 | Fresno County: The Pioneer Years to 1900- 1984 |
| Owens | Charles Hodge | Vol. II -315 | History of Orange County - 1931 |
| Owens | Alfred H | 1977 | History of South Coast Counties - 1907 |
| Owens | Harry | 240 | Fresno County: The Pioneer Years to 1900- 1984 |
| Owens | Sarah Salladay | 783 | History of Tulare & Kings Cos. - 1913 |
| Owens | William R. | 607 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. C. | 165 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. C. | 165 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. E. | 163 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. E. | 163 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. G. | 37 | History of Tulare & Kings Cos. - 1913 |
| Owens | William R. | 607 | History of Tulare & Kings Cos. - 1913 |
| Owens | Lytle | 103 | History of Tulare & Kings Cos. - 1913 |
| Owens | W. G. | 37 | History of Tulare & Kings Cos. - 1913 |
| Owens | Florence Kyle | 395 | History of Tulare & Kings Cos. - 1913 |
| Owens | Sarah Salladay | 783 | History of Tulare & Kings Cos. - 1913 |
| Owens | Mary C. Majors | 241 | History of Tulare & Kings Cos. - 1913 |
| Owens | Florence Kyle | 395 | History of Tulare & Kings Cos. - 1913 |
| Owens | Henry | 783 | History of Tulare & Kings Cos. - 1913 |
| Owens | Henry | 783 | History of Tulare & Kings Cos. - 1913 |
| Owens | L. M. | 241 | History of Tulare & Kings Cos. - 1913 |
| Owens | L. M. | 241 | History of Tulare & Kings Cos. - 1913 |
| Owens | Lytle | 103 | History of Tulare & Kings Cos. - 1913 |
| Owens | Mary C. Majors | 241 | History of Tulare & Kings Cos. - 1913 |
| Owens | Sarah | 332 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Owens | June | 246 | Shenandoah Valley Area of Amador Co. - 1854-1904 |
| Owens | Milt | 92 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Owens | Irvin E. | 216 | Pioneer Communities of Porterville, Vandalia and Porterville - 1983 |
| Owens | P. H. | ~ | Society of California Pioneers - 1912 |
| Owens | Dick | 1 #137 12/82 | Los Tulares: 1948 - 11/86 |
| Owens | John | 2 #24 9/55 | Los Tulares: 1948 - 11/86 |
| Owens | Tom | 5 #3 4/49 | Los Tulares: 1948 - 11/86 |
| OWENS | L. W. Mr & Mrs | 148 | Dinuba War Album - 1944 |
| OWENS | Lamar | 148 | Dinuba War Album - 1944 |
| Owens | Clara Louise | 182, Vol. 3 | History of the San Francisco Bay Region - 1924 |
| Owens | J. B. | 112 | Genocide & Vendetta: The Round Valley Wars |
| Owens | John | 65 | Genocide & Vendetta: The Round Valley Wars |
| Owens | James B (M. D.) | 686 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Owens | Edgar B. | 819 | History of Los Angeles and Vicinity - Guinn - 1901 |
| Owens | L. H. | 104 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owens | W. C. | 174, 195 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Owens | David F | 1553 | History of San Joaquin Co. - 1923 |
| Owens | Ella Thew Mrs. | 1553 | History of San Joaquin Co. - 1923 |
| Owings | Calvin | 770 | Biographical History of Northern California - 1891 - Ver. 1 |
| Own | Hugh | 3 #65 6/65 | Los Tulares: 1948 - 11/86 |
| Own | W C | 2 #87 12/70 | Los Tulares: 1948 - 11/86 |
| Owsley | George W | 287 | History of Humboldt County - 1915 |
| Owsley | Caroline Thomas | 264 | History of Tulare & Kings Cos. - 1913 |
| Owsley | Geo. W | 132 | History of Santa Clara County - 1922 |
| Owsley | Edgar H (B) | 1571 | History of Santa Clara County - 1922 |
| Oxford | Walter A | 9, 32, 33 | Orosi: In the beginning: 1888-1988 |
| Oxford | Alice Beinhorn | 9 | Orosi: In the beginning: 1888-1988 |
| Oxley | W. E | 794 | Ingersoll's San Bernardino Co. - 1904 |
| Oxnam | G Bromley (Rev.) | 2 #81 6/69 | Los Tulares: 1948 - 11/86 |
| Oxnard | Robert | 275, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Oxnard | Nellie | 275, Vol. 2 | History of the San Francisco Bay Region - 1924 |
| Oyamburu | Grace IRIBARNE | 326 | History of Fresno, Tulare & Kings Cos. - 1892 |
| Oyarbide | Jose | 1622 | History of San Joaquin Co. - 1923 |
| Oyearzabal | Pedro | Vol. II -280 | History of Orange County - 1931 |
| Oyervidez | Ramon | 106 | Orosi: In the beginning: 1888-1988 |
| Oyharzabal | E | 1644 | History of Orange County - 1921 |
| Oyharzabal | Pedro | Vol. 4 - 673 | California of the South - 1933 |
| Oyharzabal | Estaban | Vol. II -162 | History of Orange County - 1931 |
| Oyharzahal | Domingo | 401 | History of Orange County - 1911 |
| Oyharzahal | Estaban | 1486 | History of Orange County - 1921 |
| Oyharzahal | Peter | 1486 | History of Orange County - 1921 |
| Ozmun | Aaron M. | 1205 | Historical and Biographical Record of So. Calif. - 1902 |
| Ozmun | Aaron M | 903 | History of Los Angeles and Vicinity - Guinn - 1901 |