Museums
| Name | Country | State | City | Updated by
  | Date |
|---|---|---|---|---|---|
| Private collection: Mr.& Mrs. Harold W. Nichols | USA | Unknown | Anonymous | 10/09/2012 | |
| 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 |
Artists
| Name | Info | Years | Updated by | Date |
|---|---|---|---|---|
| Rowse, Samuel Worcester | 1822 - 1901 | Anonymous | 03/20/2012 | |
| Ryder, Platt Powell | 1821 - 1896 | Anonymous | 04/10/2012 | |
| Ryder, Chauncey F. | 1868 - 1949 | Anonymous | 05/22/2012 | |
| Sharp, Joseph H. | 1859 - 1953 | Anonymous | 12/23/2012 | |
| Smith, Henry Pember | 1854 - 1907 | Anonymous | 05/22/2012 | |
| Smith, Russell | 1812 - 1896 | Anonymous | 05/22/2012 | |
| Snell, George | 1820 - 1893 | Anonymous | 05/22/2012 | |
| Stiepevich, Vincent G. | 1841 - after 1910 | Anonymous | 04/07/2012 | |
| Strean, Maria Judson | 1866 - 1949 | Anonymous | 05/22/2012 | |
| Waite, A. P. | Active ca. 1850 | Anonymous | 06/04/2012 |
