Author
United States. National Park Service
6
Carl Schurz Memorial Foundation
1
Gibson, Deirdre
1
Independence National Historical Park (Philadelphia, Pa.)
1
Leopold-Sharp, Lynne A.
1
Lingelbach, William E. 1871-1962
1
Milley, John C.
1
Pennypacker, Samuel W. 1843-1916
1
Peterson, Charles E. 1906-2004
1
Riley, Edward M.
1
U.S Philadelphia National Shrines Park Commission
1
United States. National Park Service. Denver Service Center
1