- General Services Administration. National Archives and Records Service. Office of Educational Programs. Education Division. ?-4/1/1985
- National Archives at College Park - Still Pictures
Original caption: Miss Josephine Cobb, Archivist in the Charge of the Still Picture Branch, National Archives, is holding a photograph by Mathew B. Brady of the 20th Main Infantry Regiment. Brady Photographs of Abraham Lincoln and Hannibal Hamlin appear in the background.