| Surname | Given | Birth or Age | County | Reel | Seq | Corr |
|---|---|---|---|---|---|---|
| Orth | Emil Mathew | 1880 | Portland 10 | 27 | 2782 | |
| Orth | Fred | 1891 | Umatilla | 29 | 243 | |
| Orth | Henry Anthony | 1886 | Portland 1 | 18 | 456 | |
| Orth | John Stephen | 1872 | Jackson | 9 | 5559 | |
| Orth | Lawrence | 1896 | Clackamas | 3 | 2482 | |
| Orth | Otis Jasper | 1893 | Umatilla | 29 | 244 | |
| Orthel | George | 1887 | Marion 2 | 15 | 2548 | |
| Orthman | William | 1884 | Josephine | 10 | 3185 | |
| Orthner | Edward | 1885 | Portland 2 | 19 | 4236 | |
| Orthner | Joseph F | 1895 | Portland 10 | 27 | 2783 | |
| Ortis | G | 1890 | Klamath | 11 | 451 | |
| Ortiz | Francisco | 1891 | Jackson | 9 | 5561 | |
| Ortiz | Joe | 1884 | Portland 2 | 19 | 4235 | |
| Ortiz | Victoriano | 1893 | Malheur | 14 | 703 | *Orv |
| Ortlieb | Henry Joseph | 1896 | Clackamas | 3 | 2483 | |
| Ortman | Clarence B | 1895 | Washington | 31 | 5142 | |
| Ortman | Frank W | 1887 | Jackson | 9 | 5562 | |
| Ortman | Frank William | 1876 | Grant | 8 | 5143 | |
| Ortman | George B | 1892 | Washington | 31 | 5143 | |
| Ortman | Otto O | 1885 | Portland 2 | 19 | 4237 | |
| Ortman | W J | 1891 | Wallowa | 30 | 3538 | |
| Ortman | Wilhelm Frans Friedrich | 1884 | Portland 1 | 18 | 457 | |
| Ortman | William Henry | 1889 | Marion 2 | 15 | 2550 | |
| Ortmann | Odilo | 1888 | Marion 2 | 15 | 2549 | |
| Ortmen | William Theodore | 1888 | Jefferson | 10 | 1826 | |
| Ortmerth | Cornelius | 1889 | Marion 2 | 15 | 2551 | |
| Ortmerth | John | 1891 | Marion 2 | 15 | 2552 | |
| Ortmerth | Joseph | 1896 | Marion 2 | 15 | 2553 | |
| Orton | Alvin Hansen | 1896 | Union | 30 | 473 | |
| Orton | Arthur Wright | 1874 | Portland 7 | 25 | 175 | |
| Orton | Bernard | 1895 | Union | 30 | 475 | |
| Orton | Bucher Basil | 1891 | Union | 30 | 474 | |
| Orton | Ernest Standish | 1885 | Portland 1 | 18 | 458 | |
| Orton | Osmond Warren | 1897 | Union | 30 | 476 | |
| Orton | Ralph | 1900 | Lincoln | 12 | 4671 | |
| Orton | Samuel Everett | 1896 | Umatilla | 29 | 245 | |
| Orton | Wolverton Charles | 1874 | Lincoln | 12 | 4670 | |
| Ortschild | Fred Emil | 1873 | Portland 5 | 23 | 62 | |
| Ortschild | John Francis | 1876 | Portland 10 | 27 | 2784 | |
| Orum | Thorvald | 1885 | Lane | 12 | 1600 | |
| Orvals | Sam | 1878 | Klamath | 11 | 452 | |
| Orvick | Thorstein | 1882 | Clatsop | 4 | 4343 | *Pab |
| Orvie | Samuel Ludwig | 1898 | Sherman | 27 | 5772 | |
| Orvill | Joseph Munroe | 1873 | Malheur | 14 | 702 | |
| Orvinki | Gust Herman | 1885 | Clatsop | 4 | 4284 | |
| Orwick | Edwin Charles | 1888 | Gilliam | 8 | 3674 | |
| Orwick | Jesse | 1900 | Gilliam | 8 | 3673 | |
| Orwig | Chas N | 1889 | Columbia | 5 | 3382 | |
| Orwig | Clifton Sair | 1883 | Columbia | 5 | 3383 | |
| Orwig | Herbert Henry | 1883 | Columbia | 5 | 3384 | |
| Osa | Juan | 1898 | Malheur | 14 | 704 | |
| Osaka | Mizuta | 1882 | Umatilla | 29 | 246 | |
| Osaki | George | 1878 | Multnomah | 16 | 1968 | *Quo |
| Osaki | Tomikichi | 1884 | Portland 1 | 18 | 459 | |
| Osaki | Yoshimatsu | 1876 | Clatsop | 4 | 4285 | |
| Osako | Seikichi | 1895 | Clatsop | 4 | 4288 | |
| Osako | Torataro | 1884 | Clatsop | 4 | 4286 | |
| Osamis | Ignacio | 1899 | Lake | 11 | 2550 | *Ost |
| Osanik | Alex | 1877 | Clatsop | 4 | 4287 | |
| Osbern | Iren Lavern | 1900 | Union | 30 | 477 | |
| Osbon | Elmer Elder | 1884 | Marion 1 | 14 | 5017 | |
| Osborn | Ancel Clyde | 1882 | Harney | 9 | 956 | |
| Osborn | Andy | 1884 | Harney | 9 | 957 | |
| Osborn | Charl | 1895 | Gilliam | 8 | 3675 | |
| Osborn | Charles Alvin | 1881 | Columbia | 5 | 3385 | |
| Osborn | Charles Edwin | 1891 | Polk | 16 | 4865 | |
| Osborn | Charles Robert | 1900 | Coos | 6 | 3819 | |
| Osborn | Charlie Edward | 1890 | Union | 30 | 478 | |
| Osborn | Chester Earl | 1899 | Clatsop | 4 | 4289 | |
| Osborn | Clarence | 1895 | Grant | 8 | 5144 | |
| Osborn | Clarence Edward | 1882 | Clackamas | 3 | 2484 | |
| Osborn | Clifford Walter | 1894 | Douglas | 8 | 1482 | |
| Osborn | Clyde U | 1893 | Wheeler | 32 | 1389 | |
| Osborn | Dausey Abraham | 1877 | Linn | 13 | 2484 | |
| Osborn | Denney Ellison | 1892 | Portland 4 | 21 | 5575 | |
| Osborn | Don Basil | 1897 | Benton | 2 | 1649 | |
| Osborn | Earl B | 1887 | Umatilla | 29 | 247 | |
| Osborn | Ercell Roy | 1892 | Linn | 13 | 2485 | |
| Osborn | Ernest Raymond | 1878 | Portland 2 | 19 | 4240 | |
| Osborn | Floyd Henry | 1894 | Jefferson | 10 | 1829 | |
| Osborn | Francis Elzie | 1881 | Marion 1 | 14 | 5018 | |
| Osborn | Frank Alonzo | 1892 | Polk | 16 | 4866 | |
| Osborn | Fred James | 1883 | Malheur | 14 | 706 | |
| Osborn | Fred Percy | 1895 | Umatilla | 29 | 248 | |
| Osborn | George | 1883 | Wasco | 31 | 925 | |
| Osborn | George Harrison | 1894 | Union | 30 | 479 | |
| Osborn | George Henry | 1900 | Polk | 16 | 4867 | |
| Osborn | George Robert | 1900 | Portland 6 | 24 | 420 | |
| Osborn | Glenn Arthur | 1899 | Wheeler | 32 | 1800 | |
| Osborn | Grant Leland | 1899 | Douglas | 8 | 1479 | |
| Osborn | Hal Edgar | 1887 | Portland 10 | 27 | 2785 | |
| Osborn | Herbert Fay | 1888 | Polk | 16 | 4868 | |
| Osborn | Herman | 1891 | Clatsop | 4 | 4291 | |
| Osborn | Homer Marshall | 1876 | Linn | 13 | 2486 | |
| Osborn | James Alfred | 1884 | Wallowa | 30 | 3540 | |
| Osborn | James Garfield | 1880 | Wheeler | 32 | 1798 | |
| Osborn | James William | 1896 | Coos | 6 | 3820 | |
| Osborn | Jesse Archie | 1891 | Baker | 1 | 3021 | |
| Osborn | Jesse Davis | 1877 | Douglas | 8 | 1477 | |
| Osborn | John Carl | 1882 | Portland 3 | 20 | 4002 | |
| Osborn | John Roy | 1878 | Clackamas | 3 | 2486 | |
| Osborn | John Wesley | 1898 | Polk | 16 | 4869 | |
| Osborn | Joseph Howard | 1899 | Lincoln | 12 | 4672 | |
| Osborn | Leland | 1900 | Washington | 31 | 5144 | |
| Osborn | Leland Marvin | 1891 | Jefferson | 10 | 1827 | |
| Osborn | Leo Dayton | 1894 | Baker | 1 | 3022 | |
| Osborn | Lester Leroy | 1891 | Coos | 6 | 3821 | |
| Osborn | Lotus Cyril | 1900 | Linn | 13 | 2487 | |
| Osborn | Louis | 1893 | Baker | 1 | 3023 | |
| Osborn | Louis Leonard | 1885 | Marion 1 | 14 | 5019 | |
| Osborn | Lynn Elmer | 1887 | Coos | 6 | 3822 | |
| Osborn | Ora Tilldon | 1875 | Linn | 13 | 2488 | |
| Osborn | Orin Roscoe | 1880 | Baker | 1 | 3024 | |
| Osborn | Orval W | 1888 | Crook | 7 | 717 | |
| Osborn | Otis Clyde | 1892 | Baker | 1 | 3025 | |
| Osborn | Percy Lester | 1898 | Clackamas | 3 | 2487 | |
| Osborn | Peter Floyd | 1887 | Baker | 1 | 3026 | |
| Osborn | RD | 1874 | Polk | 16 | 4870 | |
| Osborn | Ray Frank | 1889 | Portland 6 | 24 | 421 | |
| Osborn | Ray Horace | 1880 | Hood River | 9 | 2537 | |
| Osborn | Ray Quincy | 1898 | Douglas | 8 | 1480 | |
| Osborn | Rex Roger | 1900 | Portland 4 | 21 | 5576 | |
| Osborn | Richard William | 1892 | Polk | 16 | 4871 | |
| Osborn | Robert Constant | 1880 | Jefferson | 10 | 1831 | |
| Osborn | Robert N | 1884 | Hood River | 9 | 2538 | |
| Osborn | Robert W | 1895 | Portland 7 | 25 | 177 | |
| Osborn | Roy Arthur | 1895 | Portland 10 | 27 | 2786 | |
| Osborn | Roy T | 1891 | Wheeler | 32 | 1388 | |
| Osborn | Russell Clarence | 1896 | Portland 4 | 21 | 5577 | |
| Osborn | Scott H | 1879 | Morrow | 15 | 4558 | |
| Osborn | Spray Leonard | 1883 | Coos | 6 | 3824 | |
| Osborn | Sylvester | 1895 | Portland 5 | 23 | 65 | |
| Osborn | Vernon Claton | 1898 | Polk | 16 | 4872 | |
| Osborn | Walter Alexander | 1892 | Marion 2 | 15 | 2556 | |
| Osborn | Wayne Jacob | 1890 | Hood River | 9 | 2540 | |
| Osborn | Wesley Sherman | 1889 | Polk | 16 | 4873 | |
| Osborn | Willet Simpson | 1878 | Wheeler | 32 | 1799 | |
| Osborn | William Henry | 1888 | Marion 2 | 15 | 2558 | |
| Osborn | William W | 1876 | Clackamas | 3 | 2488 | |
| Osborn | Winfred Charles | 1893 | Jefferson | 10 | 1828 | |
| Osborne | Albert Henry | 1880 | Portland 2 | 19 | 4239 | |
| Osborne | Arthur Robert | 1893 | Umatilla | 29 | 249 | |
| Osborne | Benjamin Thomas | 1880 | Portland 3 | 20 | 4003 | |
| Osborne | Charles Byron | 1894 | Portland 7 | 25 | 178 | |
| Osborne | Charles Edward | 1876 | Douglas | 8 | 1478 | |
| Osborne | Charles Marcus St Lawrence | 1889 | Wallowa | 30 | 3542 | |
| Osborne | Charles Parker | 1876 | Portland 5 | 23 | 63 | |
| Osborne | Charles William | 1886 | Portland 6 | 24 | 422 | |
| Osborne | Clarence Emil | 1873 | Portland 1 | 18 | 460 | |
| Osborne | Clifton | 1881 | Columbia | 5 | 3386 | |
| Osborne | Cyril Robert | 1898 | Portland 10 | 27 | 2787 | |
| Osborne | Earl | 1885 | Portland 6 | 24 | 423 | |
| Osborne | Earl E | 1896 | Portland 4 | 21 | 5578 | |
| Osborne | Earl Lee | 1899 | Wallowa | 30 | 3541 | |
| Osborne | Ed | 1887 | Lake | 11 | 2547 | |
| Osborne | Edward Orval | 1880 | Portland 6 | 24 | 424 | |
| Osborne | Ernest Wilbert | 1873 | Yamhill | 32 | 4523 | *Pet |
| Osborne | Floyd L | 1894 | Portland 9 | 26 | 2816 | |
| Osborne | Frank Lee | 1873 | Malheur | 14 | 705 | |
| Osborne | George Ferrin | 1878 | Portland 2 | 19 | 4238 | |
| Osborne | Harry Nicklos | 1888 | Portland 9 | 26 | 2817 | |
| Osborne | Hastings | 1889 | Union | 30 | 480 | |
| Osborne | Hobart D | 1895 | Wheeler | 32 | 1387 | |
| Osborne | Ira | 1884 | Portland 6 | 24 | 425 | |
| Osborne | James Bezelah | 1888 | Benton | 2 | 1650 | |
| Osborne | James Edward | 1897 | Umatilla | 29 | 251 | |
| Osborne | John Benjamin | 1883 | Wheeler | 32 | 1801 | |
| Osborne | John Ephiam | 1888 | Portland 9 | 26 | 2818 | |
| Osborne | John Rodney | 1898 | Clackamas | 3 | 2489 | |
| Osborne | John Silvester | 1880 | Clackamas | 3 | 2490 | |
| Osborne | John Warren | 1894 | Portland 2 | 19 | 4241 | |
| Osborne | Joseph Ernest | 1887 | Portland 8 | 25 | 5154 | |
| Osborne | Joseph Victor | 1890 | Wheeler | 32 | 1385 | |
| Osborne | Lloyd | 1894 | Portland 6 | 24 | 426 | |
| Osborne | Orlando | 1876 | Portland 5 | 23 | 64 | |
| Osborne | Owen | 1886 | Portland 6 | 24 | 427 | |
| Osborne | Raymond Emerson | 1899 | Lane | 12 | 1602 | |
| Osborne | Raymond Lee | 1882 | Portland 9 | 26 | 2819 | |
| Osborne | Richard Thomas Henry | 1894 | Baker | 1 | 3027 | |
| Osborne | Robert Lee | 1895 | Portland 10 | 27 | 2788 | |
| Osborne | Roy Harrison | 1895 | Coos | 6 | 3823 | |
| Osborne | Talbert | 1891 | Portland 4 | 21 | 5579 | |
| Osborne | Theodore H | 1894 | Portland 8 | 25 | 5155 | |
| Osborne | Thomas Edgar | 1886 | Portland 8 | 25 | 5156 | |
| Osborne | Walter Eugene | 1892 | Portland 10 | 27 | 2789 | |
| Osborne | Walter L H | 1887 | Douglas | 8 | 1481 | |
| Osborne | Walter Leslie | 1895 | Marion 2 | 15 | 2557 | |
| Osborne | William Bushnell (Jr) | 1884 | Portland 6 | 24 | 428 | |
| Osborne | William McKinley | 1898 | Grant | 8 | 5145 | |
| Osborne | William Richard | 1881 | Yamhill | 32 | 4522 | *Pet |
| Osbourn | John Lee | 1882 | Columbia | 5 | 3387 | |
| Osbourn | Stephen James | 1881 | Portland 7 | 25 | 179 | |
| Osbron | Joseph Warren | 1881 | Lane | 12 | 1603 | |
| Osburn | Albert Whitson | 1899 | Portland 4 | 21 | 5580 | |
| Osburn | Arthur Marion | 1894 | Clackamas | 3 | 2491 | |
| Osburn | Austin | 1880 | Clatsop | 4 | 4290 | |
| Osburn | Clarance Edwin | 1879 | Multnomah | 16 | 1969 | *Quo |
| Osburn | Earl Green | 1888 | Portland 7 | 25 | 176 | |
| Osburn | Guy Frost | 1881 | Portland 1 | 18 | 461 | |
| Osburn | Howard Jennings | 1900 | Clackamas | 3 | 2492 | |
| Osburn | Orren E | 1891 | Wasco | 31 | 926 | |
| Osburn | Owens Sanford | 1876 | Hood River | 9 | 2539 | |
| Osburn | Wade Hampton | 1876 | Lincoln | 12 | 4673 | |
| Osburne | Clay | 1876 | Portland 8 | 25 | 5153 | |
| Ose | Olaf Ludvig | 1884 | Portland 1 | 18 | 462 | |
| Oselame | Frank | 1881 | Crook | 7 | 718 | |
| Osemos | James | 1892 | Clatsop | 4 | 4292 | |
| Osen | Olaf M | 1890 | Hood River | 9 | 2541 | |
| Osenbrugge | Jacobus Johannes | 1885 | Jackson | 9 | 5563 | |
| Osfield | Carl Henry | 1894 | Portland 5 | 23 | 66 | |
| Osfield | John Theodore | 1895 | Portland 7 | 25 | 180 | |
| Osfield | William Wallace | 1890 | Portland 7 | 25 | 181 | |
| Osgood | Alfred Merle | 1873 | Portland 4 | 21 | 5581 | |
| Osgood | Arthur Elwin | 1887 | Harney | 9 | 958 | |
| Osgood | Carl Henry | 1874 | Portland 8 | 25 | 5157 | |
| Osgood | Culver Kenyon | 1890 | Portland 6 | 24 | 429 | |
| Osgood | Frank Webster | 1892 | Portland 2 | 19 | 4242 | |
| Osgood | George | 1886 | Baker | 1 | 3028 | |
| Osgood | George Wallace | 1892 | Clatsop | 4 | 4294 | |
| Osgood | Reuben Harlan | 1875 | Portland 7 | 25 | 182 | |
| Osgood | Roy | 1884 | Baker | 1 | 3029 | |
| Osgood | William Parson | 1886 | Clatsop | 4 | 4293 | |
| Oshea | Henry | 1888 | Portland 10 | 27 | 2790 | |
| Oshen | Isaac | 1884 | Columbia | 5 | 3388 | |
| Oshima | Denjo | 1887 | Portland 1 | 18 | 463 | |
| Oshima | Katsugo | 1887 | Clatsop | 4 | 4297 | |
| Oshima | Mineyuki | 1900 | Clatsop | 4 | 4295 | |
| Oshimaru | Hichisaburo | 1875 | Clatsop | 4 | 4296 | |
| Oshimoto | Takesuke | 1885 | Portland 1 | 18 | 464 | |
| Oshita | Zenkichi | 1882 | Portland 2 | 19 | 4243 | |
| Osier | William John | 1887 | Portland 2 | 19 | 4244 | |
| Oskar | John | 1886 | Klamath | 11 | 454 | |
| Oskelind | Fred Allen | 1880 | Union | 30 | 482 | *Ost |
| Osland | Arthur G | 1880 | Portland 7 | 25 | 183 | |
| Osland | George Robert | 1885 | Multnomah | 16 | 1970 | *Quo |
| Oslin | Samuel Jessie | 1877 | Jackson | 9 | 5550 | *Ols |
| Oslund | Carl Edwin | 1888 | Portland 3 | 20 | 4004 | |
| Oslund | Ture | 1897 | Clatsop | 4 | 4298 | |
| Osman | Harry | 1886 | Portland 2 | 19 | 4245 | |
| Osman | Lewis Ray | 1889 | Yamhill | 32 | 4524 | *Pet |
| Osmandson | George | 1894 | Portland 5 | 23 | 67 | |
| Osmer | Charles Henry | 1884 | Portland 10 | 27 | 2793 | |
| Osmialowski | Jesse | 1900 | Columbia | 5 | 3389 | |
| Osmialowski | John | 1898 | Columbia | 5 | 3390 | |
| Osmialowski | Joseph | 1895 | Columbia | 5 | 3391 | |
| Osmin | Charlie Jess | 1890 | Morrow | 15 | 4559 | |
| Osmon | Elmer Alonzo | 1874 | Columbia | 5 | 3392 | |
| Osmund | Alfred | 1875 | Portland 1 | 18 | 465 | |
| Osmund | Theo | 1880 | Portland 5 | 23 | 68 | |
| Osmundson | Andrew | 1874 | Wallowa | 30 | 3545 | |
| Osmundson | Ole | 1889 | Deschutes | 7 | 3533 | |
| Osmundson | Oliver | 1873 | Lake | 11 | 2548 | |
| Osmundson | Sam S | 1878 | Wallowa | 30 | 3544 | |
| Osmundson | Severin | 1883 | Wallowa | 30 | 3543 | |
| Osmus | John Rudolph | 1888 | Portland 2 | 19 | 4246 | |
| Ospelt | Anton | 1882 | Washington | 31 | 5145 | |
| Ospiri | Simon | 1885 | Malheur | 14 | 707 | |
| Oss | Julius | 1883 | Klamath | 11 | 455 | |
| Osscar | Charles Martin | 1884 | Benton | 2 | 1651 | |
| Osscar | Joseph | 1877 | Benton | 2 | 1652 | |
| Ossenberg | Louis | 1880 | Portland 2 | 19 | 4247 | |
| Ossenberger | William | 1882 | Portland 2 | 19 | 4248 | |
| Ossman | Leslie Harrison | 1896 | Jackson | 9 | 5564 | |
| Ossmanoff | Murzabek | 29 yr | Portland 2 | 19 | 4249 | |
| Ossry | David | 1879 | Portland 1 | 18 | 466 | |
| Ostberg | Hans | 1874 | Lane | 12 | 1601 | *Osb |
| Ostberg | Oscar Andrew | 1891 | Curry | 7 | 1700 | |
| Ostby | Hans | 1891 | Deschutes | 7 | 3534 | |
| Osteen | Louis Marion | 1880 | Portland 10 | 27 | 2794 | |
| Osten | Charles Jacob | 1894 | Morrow | 15 | 4560 | |
| Ostenberg | Max Fredrick | 1878 | Portland 10 | 27 | 2795 | |
| Ostendorf | Edward | 1887 | Portland 6 | 24 | 430 | |
| Ostendorf | John Henry | 1879 | Union | 30 | 481 | |
| Ostensar | Ole | 1884 | Portland 1 | 18 | 467 | |
| Ostenson | Charles Burton | 1889 | Portland 4 | 21 | 5582 | |
| Oster | Arlie | 1878 | Deschutes | 7 | 3535 | |
| Oster | George Lowell | 1897 | Malheur | 14 | 708 | |
| Oster | Jacob Francis | 1877 | Clatsop | 4 | 4307 | |
| Oster | Jacob James | 1885 | Portland 4 | 21 | 5583 | |
| Oster | Jesse C | 1880 | Malheur | 14 | 709 | |
| Oster | Joseph | 1892 | Marion 2 | 15 | 2559 | |
| Oster | Joseph Cotton | 1873 | Portland 7 | 25 | 184 | |
| Oster | Mike | 1887 | Morrow | 15 | 4561 | |
| Oster | Sebastian | 1896 | Clackamas | 3 | 2493 | |
| Osterback | August | 1877 | Clackamas | 3 | 2494 | |
| Osterby | Waino Viktor | 1896 | Clatsop | 4 | 4314 | |
| Ostergard | Elmer Lund | 1887 | Polk | 16 | 4874 | |
| Ostergard | John | 1887 | Clatsop | 4 | 4318 | |
| Osterhaug | John | 1882 | Portland 5 | 23 | 69 | |
| Osterhaut | Ernest Evert | 1889 | Harney | 9 | 959 | |
| Osterhohm | Axel Christian Emanuel | 1892 | Yamhill | 32 | 4525 | *Pet |
| Osterholm | Peter Adolf | 1874 | Clackamas | 3 | 2495 | |
| Osterhoudt | John Edwin | 1874 | Lane | 12 | 1604 | |
| Ostering | Julius Melvin | 1879 | Wasco | 31 | 927 | |
| Osterlund | Andreas Johan | 1882 | Clatsop | 4 | 4308 | |
| Osterlund | Carl G | 1885 | Clatsop | 4 | 4306 | |
| Osterlund | Frank | 1875 | Clatsop | 4 | 4309 | |
| Osterlund | Herman Walfrid | 1882 | Clatsop | 4 | 4310 | |
| Osterlund | John E | 1883 | Clatsop | 4 | 4305 | |
| Osterlund | Oscar Julius | 1881 | Clatsop | 4 | 4304 | |
| Osterman | Alfred Walter | 1889 | Portland 6 | 24 | 431 | |
| Osterman | John | 1882 | Washington | 31 | 5146 | |
| Osterman | William J | 1896 | Washington | 31 | 5147 | |
| Ostermann | Herman Nicholas | 1873 | Marion 2 | 15 | 2560 | |
| Ostermann | Robert B | 1893 | Portland 6 | 24 | 432 | |
| Ostertag | John Henry | 1890 | Portland 2 | 19 | 4251 | |
| Ostgaard | Edward Julius | 1884 | Marion 2 | 15 | 2561 | |
| Ostgard | Edwin Olsen | 1891 | Lane | 12 | 1605 | |
| Ostgard | John | 1879 | Portland 8 | 25 | 5158 | |
| Ostin | John Frank | 1875 | Wasco | 31 | 920 | *Ols |
| Ostlind | Bror Benjamin | 1885 | Coos | 6 | 3825 | |
| Ostling | Erik Oscar | 1877 | Clatsop | 4 | 4312 | |
| Ostling | Gustaf John | 1879 | Clatsop | 4 | 4313 | |
| Ostling | Victor | 1885 | Portland 1 | 18 | 468 | |
| Ostlund | David Emanuel | 1882 | Clatsop | 4 | 4301 | |
| Ostlund | George William | 1893 | Portland 2 | 19 | 4250 | |
| Ostlund | John | 1890 | Hood River | 9 | 2542 | |
| Ostma | Toiro | 1890 | Clatsop | 4 | 4316 | |
| Ostman | Felix | 1880 | Columbia | 5 | 3394 | |
| Ostman | Waino William | 1890 | Clatsop | 4 | 4317 | |
| Ostomel | Harry | 1881 | Portland 10 | 27 | 2796 | |
| Ostos | Ernest Z | 1876 | Clatsop | 4 | 4299 | |
| Ostrand | Harry Anton | 1886 | Clatsop | 4 | 4302 | |
| Ostrand | Hjalmar Fritiof | 1886 | Clatsop | 4 | 4303 | |
| Ostrander | Aubrey | 1892 | Portland 7 | 25 | 185 | |
| Ostrander | Charles James | 1875 | Portland 3 | 20 | 4005 | |
| Ostrander | Clinton Edgar | 1892 | Marion 1 | 14 | 5020 | |
| Ostrander | Donald Roland | 1894 | Portland 7 | 25 | 186 | |
| Ostrander | Frederick George | 1892 | Tillamook | 28 | 1453 | |
| Ostrander | Garwood Henry | 1876 | Portland 9 | 26 | 2821 | *Ota |
| Ostrander | LeRoy Clifford | 1898 | Umatilla | 29 | 254 | |
| Ostrander | Leo S | 1899 | Yamhill | 32 | 4528 | *Pet |
| Ostrander | Russ H | 1892 | Polk | 16 | 4875 | |
| Ostrander | Stanley Jacob | 1891 | Wasco | 31 | 928 | |
| Ostrander | Walter Norman | 1885 | Portland 6 | 24 | 433 | |
| Ostrander | Wilbur Wesley | 1900 | Curry | 7 | 1649 | |
| Ostrander | William Egbert | 1900 | Lane | 12 | 1606 | |
| Ostrander | William Leslie | 1888 | Polk | 16 | 4876 | |
| Ostrem | Ole | 1884 | Washington | 31 | 5148 | |
| Ostrin | Carl Hilmer | 1884 | Marion 1 | 14 | 5022 | |
| Ostrin | Ernest Ferdinand | 1893 | Marion 1 | 14 | 5021 | |
| Ostrin | Gustave Andrew | 1891 | Marion 1 | 14 | 5023 | |
| Ostrom | Carl Gust | 1894 | Portland 7 | 25 | 187 | |
| Ostrom | Erik | 1879 | Columbia | 5 | 3395 | |
| Ostrom | Gust Hjalmar | 1886 | Portland 8 | 25 | 5159 | |
| Ostrom | Henry William | 1886 | Lake | 11 | 2549 | |
| Ostrom | John | 1886 | Columbia | 5 | 3396 | |
| Ostrom | John Alexander | 1890 | Clatsop | 4 | 4315 | |
| Ostrom | John Victor | 1879 | Multnomah | 16 | 1971 | *Quo |
| Ostrom | Lorraine A | 1894 | Clackamas | 3 | 2496 | |
| Ostrom | Waino John | 1899 | Clatsop | 4 | 4311 | |
| Ostronski | Thomas | 1873 | Portland 10 | 27 | 2797 | |
| Ostrow | Manuel J | 1875 | Coos | 6 | 3826 | |
| Ostrowski | Stanley | 1872 | Portland 2 | 19 | 4252 | |
| Ostrum | Richard Jacob | 1898 | Portland 5 | 23 | 70 | |
| Ostting | Charles John | 1881 | Clatsop | 4 | 4300 | |
| Ostun | Charley Rosco | 1888 | Columbia | 5 | 3393 | |
| Ostwald | Paul William | 1880 | Grant | 8 | 5146 | |
| Ostwalt | Henry | 1882 | Portland 8 | 25 | 5160 | |
| Osumi | Hyozo | 1877 | Portland 1 | 18 | 469 | |
| Osumi | Juichi | 1887 | Wasco | 31 | 929 | |
| Osumi | Sematsu | 1881 | Clatsop | 4 | 4319 | |
| Oswald | Albert Alanzo | 1886 | Portland 6 | 24 | 434 | |
| Oswald | Alfred Max | 1890 | Marion 2 | 15 | 2562 | |
| Oswald | Bud Roy | 1899 | Union | 30 | 484 | |
| Oswald | Carl Henry | 1886 | Portland 5 | 23 | 71 | |
| Oswald | Edward John | 1886 | Portland 3 | 20 | 4006 | |
| Oswald | Emil Karl | 1886 | Portland 3 | 20 | 4007 | |
| Oswald | Eugene Hiram | 1896 | Union | 30 | 483 | |
| Oswald | Ferdinand | 1882 | Portland 8 | 25 | 5161 | |
| Oswald | Floyd Emerson | 1899 | Portland 6 | 24 | 435 | |
| Oswald | Frank Lawrence | 1875 | Clackamas | 3 | 2497 | |
| Oswald | Fred Phillip | 1889 | Umatilla | 29 | 255 | |
| Oswald | George Elmer | 1875 | Clackamas | 3 | 2498 | |
| Oswald | George Everett | 1880 | Lane | 12 | 1599 | *Orr |
| Oswald | James | 1877 | Portland 6 | 24 | 436 | |
| Oswald | Joseph | 1878 | Jefferson | 10 | 1830 | |
| Oswald | Joseph Francis | 1882 | Portland 2 | 19 | 4253 | |
| Oswald | Karl Arnold | 1891 | Portland 4 | 21 | 5584 | |
| Oswald | Nick | 1882 | Coos | 6 | 3827 | |
| Oswald | William Henry | 1874 | Lane | 12 | 1607 | |
| Oswalt | Francis Marion | 1887 | Harney | 9 | 960 | |
| Oswalt | Fred Loren | 1899 | Union | 30 | 485 | |
| Oswalt | Jacob Silas | 1875 | Union | 30 | 486 | |
| Oswalt | Robert Lincoln | 1884 | Lincoln | 12 | 4674 | |
| Oswin | Harry H | 1895 | Portland 2 | 19 | 4254 | |
| Oswin | Richard Boot | 1886 | Portland 1 | 18 | 470 | |
| Ota | Asazo | 1886 | Grant | 8 | 5147 | |
| Ota | Ataro | 1886 | Jackson | 9 | 5565 | |
| Ota | Elfuku | 1880 | Portland 1 | 18 | 471 | |
| Ota | Kijiro | 1880 | Portland 1 | 18 | 472 | |
| Ota | Ringi | 1887 | Portland 1 | 18 | 473 | |
| Ota | Shimaji | 1877 | Clatsop | 4 | 4320 | |
| Ota | Tabanki | 1880 | Multnomah | 16 | 1972 | *Quo |
| Ota | Toshitaro | 1883 | Jackson | 9 | 5566 | |
| Otagiri | Ryujiro | 1885 | Portland 1 | 18 | 474 | |
| Otani | Shotaro | 1887 | Portland 9 | 26 | 2820 | |
| Otey | Chas Boyes | 1889 | Klamath | 11 | 456 | |
| Otey | Elijah Edward | 1888 | Portland 6 | 24 | 437 | |
| Otey | Fay | 1887 | Douglas | 8 | 1483 | |
| Otey | Francis Raymond | 1882 | Portland 8 | 25 | 5162 | |
| Otey | William Ray | 1890 | Wasco | 31 | 932 | *Ott |
| Othanoulis | Gust | 1893 | Portland 2 | 19 | 4255 | |
| Othman | Edward | 1874 | Clatsop | 4 | 4321 | |
| Othus | Byron Frederick | 1895 | Portland 6 | 24 | 438 | |
| Othus | Percy Monroe | 1892 | Portland 10 | 27 | 2798 | |
| Otis | Abraham Elroy | 1887 | Wasco | 31 | 933 | *Ott |
| Otis | Dick Frank | 1876 | Grant | 8 | 5148 | |
| Otis | Don Cameron | 1894 | Portland 1 | 18 | 475 | |
| Otis | Edward | 1879 | Portland 5 | 23 | 72 | |
| Otis | Harva Rockwell | 1880 | Malheur | 14 | 710 | |
| Otis | Orlie H | 1882 | Portland 6 | 24 | 439 | |
| Otis | Pearl Raymond | 1878 | Yamhill | 32 | 4529 | *Pet |
| Otis | Ralph Grey | 1892 | Yamhill | 32 | 4400 | |
| Otis | Webb Harlan | 1882 | Malheur | 14 | 711 | |
| Otjen | August Henry | 1874 | Marion 1 | 14 | 5025 | |
| Otjen | Barnhard Emil | 1880 | Marion 1 | 14 | 5026 | |
| Otjen | Herman | 1876 | Marion 2 | 15 | 2555 | *Ogl |
| Otley | Charles | 1891 | Harney | 9 | 961 | |
| Otley | Fred (Jr) | 1873 | Harney | 9 | 965 | |
| Otley | Henry | 1888 | Harney | 9 | 962 | |
| Otley | Richard | 1894 | Harney | 9 | 963 | |
| Otmann | Christopher Anss | 1888 | Portland 8 | 25 | 5164 | *Ott |
| Otness | Chris Christopher | 1876 | Washington | 31 | 5149 | |
| Oto | Leichi | 1875 | Umatilla | 29 | 256 |
