Author
Logan, Deborah Norris, 1761-1839
2
Morgan, Fred
2
Robert Cornelius, 1809-1893
1
Anthony Imbert, circa 1794-1834
1
Carlin, Joseph M.
1
Central State Normal School
1
Charles Godfrey Leland, 1824-1903
1
Church of Jesus Christ of Latter-day Saints
1
Faill, Rodger T.
1
Geological Survey of Pennsylvania
1
Johannes Kelpius, 1667-1708
1
Muhlenberg, Henry Melchior
1
Pennsylvania. Bureau of Topographic and Geologic Survey
1
Pennsylvania. Department of Conservation and Natural Resources
1
Schoepff, Johann David, 1752-1800
1
Thomas Chalkley Matlack, 1858-1945
1