Names |
| Oakes, Frederick (1781-1855) |
| Oakes, Henry (1806- ) |
| Olin, John G. (1836-1928) |
| Olmsted, George (1817-1886) |
| Orcutt, Wales Charles (1837-1905) |
| Ormsby, Henry (Abt 1807- ) |
| Osgood, George (1854- ) |
| Osgood, John (1770-1840) |
| Osgood, John (1798-1861) |
| Osgood, Marion Hudson (1847- ) |
| Owen, Charles (1824-1900) |
| Owen, William (1809-1886) |