Mackintosh, B., United States. National Park Service. History Division. (1985). The Historic Sites Survey and National Historic Landmarks Program: a history. Washington, D.C.: History Division, National Park Service, Dept. of the Interior.MLA Citation
Mackintosh, Barry, and United States. National Park Service. History Division. The Historic Sites Survey And National Historic Landmarks Program: a History. Washington, D.C.: History Division, National Park Service, Dept. of the Interior, 1985.
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