Author
Haywood, Marshall De Lancey, 1871-1933
2
Hoffman, Howard M.
2
Lansing, Dorothy I.
2
American Philosophical Society
1
Bartram, Isaac
1
Bartram, John 1699-1777
1
Bartram, Moses 1732-1809
1
Bartram, William 1739-1823
1
Chester County Medical Society
1
Chester County Medical Society (Pa.)
1
James, Thomas Potts, 1803-1882
1
Newcomen Society in North America
1
Pleasants, Henry, 1884-
1
Pleasants, Henry, 1884-1963
1