Museums
| Name | Country
  | State | City | Updated by | Date |
|---|---|---|---|---|---|
| Lyndon Baines Johnson Library & Museum | USA | TX | Austin | Anonymous | 08/26/2012 |
| Marine Arts Gallery | USA | MA | Salem | Anonymous | 08/27/2012 |
| Mark LaSalle Fine Art | USA | NY | Albany | Anonymous | 09/20/2012 |
| Maryland Historical Society | USA | MD | Baltimore | Anonymous | 09/20/2012 |
| Maryland State Archives | USA | MD | Annapolis | Anonymous | 09/20/2012 |
| Massachusetts Historical Society | USA | MA | Boston | Anonymous | 09/24/2012 |
| Massachusetts State House | USA | MA | Boston | Anonymous | 09/24/2012 |
| Mattatuck Museum | USA | CT | Waterbury | Anonymous | 09/24/2012 |
| McColl Fine Art | USA | NC | Charlotte | Anonymous | 09/24/2012 |
| McDonald Gallery | USA | D.C. | Washington | Anonymous | 09/24/2012 |
