Author
Pennsylvania Historical and Museum Commission
9
American Council for Polish Culture
2
Beyer, George R.
2
Daughters of the American Revolution Pennsylvania Valley Forge Chapter
2
Levin, Saul
2
Lower Providence Presbyterian Church (Montgomery County, Pa.)
2
Pennsylvania Historical Commission
2
Polish Heritage Society of Philadelphia
2
University of the State of New York. Division of Archives and History
2
Anthony Wayne Parkway Board
1
Association for Gravestone Studies
1
Bamberger, Richard
1
Bayliff, William H.
1
Blockson, Charles L.
1
Doremus, Sharon
1
Hale, Horatio, 1817-1896
1
Historic Sites Committee (Philadelphia, Pa.)
1
Historical Society of Pennsylvania
1
Minnesota Historical Records Survey Project
1
Minnesota Historical Society
1
Minnesota. Department of Highways
1
Morris County Heritage Commission (Morristown, N.J.)
1
Once Upon a Nation (Organization)
1
State University of New York State Education Dept Office of State History
1
Temple University. Charles L. Blockson Afro-American Collection
1
University of the State of New York. Office of State History
1
Virginia Conservation Commission
1
Virginia. State Commission on Conservation and Development
1
William Penn Foundation
1