DescriptionPhoto of hallway in Mt. Vernon. On back: "Hallway in the Mansion at Mt. Vernon. Giving a view of the old stairway, and the clock upon the stair; also showing the ponderous old brass knocker on the west door, so often handled by Washington's distinguished guests". N.G. Johnson, Photographer, 426 7th St., Washington, D.C. Copyright 1880 by the Mount Vernon Association