Author
United States. National Park Service
America's Industrial Heritage Project
1
American Association for State and Local History
1
Anderson Notter Finegold Inc
1
Appleman, Roy Edgar
1
Beyer Blinder Belle, Architects & Planners
1
Brown, Sharon A.
1
Friends of Independence National Historical Park
1
Friends of Poe
1
Independence National Historical Park (Philadelphia, Pa.)
1
Kurjack, Dennis C.
1
National Conference of State Historic Preservation Officers
1
Petroglyph National Monument (N.M.)
1
Riley, Edward M.
1
United States. Department of the Interior. Southwestern Pennsylvania Heritage Preservation Commission
1
Unrau, Harlan D.
1