Second Letter Index
| Oa | Ob | Oc | Od | Oe | Of | Og | Oh | Oi | Oj | Ok | Ol | Om
| On
| Oo
| Op
| Oq
| Or
| Os
| Ot
| Ou
| Ov
| Ow
| Ox
| Oy
| Oz
| |
| Name | Line | Page | District | Soundex
| Ogden, Joseph M. | 90 | 3B | 88 | O235
| |
| Name | Line | Page | District | Soundex
| Olson, Jos. | 62 | 10B | 88 | O425
| |
| Name | Line | Page | District | Soundex
| Orton, Grover C. | 43 | 2A | 87 | O635
| Orton, Gus | 6 | 1A | 90 | O635
| |
| Name | Line | Page | District | Soundex
| Ostler, Alvie | 82 | 2B | 90 | O234
| |
| Name | Line | Page | District | Soundex
| Otten, Jay W. | 13 | 4A | 87 | O350
| |
| Name | Line | Page | District | Soundex
| Outzen, M. William | 64 | 7B | 90 | O325
| |
| Name | Line | Page | District | Soundex
| Owens, Ferol E. | 1 | 9A | 90 | O520
| |