Museums
| Name | Country | State | City | Updated by
  | Date |
|---|---|---|---|---|---|
| Massachusetts Historical Society | USA | MA | Boston | Anonymous | 09/24/2012 |
| Massachusetts State House | USA | MA | Boston | Anonymous | 09/24/2012 |
| Mathaf Gallery | UK | London | Anonymous | 10/09/2012 | |
| Mattatuck Museum | USA | CT | Waterbury | Anonymous | 09/24/2012 |
| McColl Fine Art | USA | NC | Charlotte | Anonymous | 09/24/2012 |
| McCord Museum | Canada | QC | Montreal | Anonymous | 08/27/2012 |
| McDonald Gallery | USA | D.C. | Washington | Anonymous | 09/24/2012 |
| McDougal Fine Art | USA | MA | Gloucester | Anonymous | 09/24/2012 |
| Private collection: James W. & Frances G. McGlothlin | USA | Unknown | Anonymous | 10/09/2012 | |
| Private collection: McKinley, Peg, South Mt. Hope | USA | MI | Carson City | Anonymous | 10/09/2012 |
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 |
