Museums
| Name | Country
  | State | City | Updated by | Date |
|---|---|---|---|---|---|
| North Carolina Museum of Art | USA | NC | Raleigh | Anonymous | 09/27/2012 |
| Private collection: O'Brien, Cornelius | USA | IN | Lawrenceburg | Anonymous | 10/09/2012 |
| Private collection: O'Nan, Mildred Cook | USA | OH | Cincinnati | Anonymous | 10/09/2012 |
| Oakland Museum of California | USA | CA | Oakland | Anonymous | 09/27/2012 |
| Olana | USA | NY | Hudson | Anonymous | 09/27/2012 |
| Old Print Shop | USA | NY | New York | Anonymous | 10/09/2012 |
| Old State House Museum | USA | MA | Boston | Anonymous | 02/10/2012 |
| Olde Hope Antiques, Inc. | USA | PA | New Hope | Anonymous | 09/27/2012 |
| Society of California Pioneers | USA | CA | San Francisco | Anonymous | 10/03/2012 |
| Orlando Museum of Art | USA | FL | Orlando | Anonymous | 09/27/2012 |
Artists
| Name | Info | Years | Updated by | Date |
|---|---|---|---|---|
| Brush, George de Forest | 1855 - 1941 | Anonymous | 05/18/2012 | |
| Bunce, William Gedney | 1840 - 1916 | Anonymous | 05/18/2012 | |
| Butler, Howard Russell | 1856 - 1934 | Anonymous | 05/18/2012 | |
| Cafferty, James H. | 1819 - 1869 | Anonymous | 05/15/2012 | |
| Carlson, John Fabian | 1875 - 1945 | Anonymous | 10/21/2012 | |
| Coman, Charlotte Buell | 1833 - 1924 | Anonymous | 05/15/2012 | |
| Coolidge, Bertha | 1880 - 1953 | Anonymous | 05/15/2012 | |
| Copestick, Alfred | ca. 1837 - 1859 | Anonymous | 05/15/2012 | |
| Dabo, Leon | 1868 - 1960 | Anonymous | 05/15/2012 | |
| De Luce, Percival | 1849 - 1914 | Anonymous | 05/15/2012 |
