Museums
| Name | Country | State
  | City | Updated by | Date |
|---|---|---|---|---|---|
| Gilcrease Museum | USA | OK | Tulsa | Anonymous | 08/06/2012 |
| Museum of Art at the University of Oklahoma | USA | OK | Norman | Anonymous | 09/25/2012 |
| National Cowboy & Western Heritage Museum | USA | OK | Oklahoma City | Anonymous | 09/26/2012 |
| Williams Companies | USA | OK | Tulsa | Anonymous | 10/07/2012 |
| Private collection: Hazel Wood Millholland | Canada | ON | Sarnia | Anonymous | 10/09/2012 |
| National Gallery of Canada | Canada | ON | Ottawa | Anonymous | 09/26/2012 |
| Private collection: John A. McNab | Canada | ON | Ottawa | Anonymous | 10/09/2012 |
| Public Archives of Canada | Canada | ON | Ottawa | Anonymous | 09/28/2012 |
| Waddingtons Auction House | Canada | ON | Toronto | Anonymous | 10/07/2012 |
| Art Gallery of Ontario | Canada | ON | Toronto | Anonymous | 07/29/2012 |
Artists
| Name | Info | Years | Updated by | Date |
|---|---|---|---|---|
| Walker, Henry Oliver | 1843 - 1929 | Anonymous | 05/15/2012 | |
| Waltensperger, Charles E. | 1870 - 1931 | Anonymous | 05/15/2012 | |
| Weber, Sarah Stilwell | 1863 - 1935 | Anonymous | 12/27/2012 | |
| Weir, John Ferguson | 1841 - 1926 | Anonymous | 05/15/2012 | |
| Weldon, Charles Dater | 1855 - 1935 | Anonymous | 10/13/2012 | |
| Woodhouse, C.L. | Active ca. 1869 | Anonymous | 02/20/2012 | |
| Zogbaum, Rufus Fairchild | 1849 - 1925 | Anonymous | 12/14/2012 | |
| Phillips, Clarence Coles | 1880 - 1927 | Anonymous | 10/13/2012 | |
| Relyea, Charles Mark | 1863 - 1932 | Anonymous | 05/22/2012 | |
| Rhead, Louis John | 1858 - 1926 | Anonymous | 05/20/2012 |
