[Barry Mackintosh] ; produced by Harpers Ferry Center, National Park Service

U.S. Dept. of the Interior [2005?] [3rd print ed]

Available at 1 libraries

Barry Mackintosh

Chelsea House c1988 Know your government (New York, N.Y.)

Available at 7 libraries

[by Barry Mackintosh] ; produced by the Division of Publications, National Park Service

U.S. Dept. of the Interior 1985

Available at 1 libraries