Author
Historical Society of Western Pennsylvania
4
James, Alfred Procter, 1886-
2
Senator John Heinz Pittsburgh Regional History Center (Pittsburgh, Pa.)
2
Stotz, Charles Morse
2
Beard, Chuck
1
Caldwell, Erskine, 1903-1987
1
Duer, Clara E.
1
Faires, Nora
1
Federal Writers' Project (Pa.)
1
Fox, Arthur B.
1
Gilpin, Joshua
1
Gilpin, Joshua, 1765-1840
1
Glasco, Laurence Admiral
1
Halaas, David F.
1
Masich, Andrew E.
1
Pennsylvania Historical and Museum Commission
1
Roberts, Paul
1
Swetnam, George
1
University of Pittsburgh Archives of Industrial Society
1
Walker, Joseph E., 1911-
1
Western Pennsylvania Genealogical Society
1