Author
Chester County Cabinet of Natural Science (West Chester, Pa.)
4
Moak, Jefferson M.
3
Clemson, Thomas Green, 1807-1888
2
Darlington, William, 1782-1863
2
Delaware County Institute of Science (Media, Pa.)
2
Formigli, Donald
2
Judah, Naptali
2
Lea, Isaac, 1792-1886
2
Moore, John, 1729-1802
2
Philadelphia County Medical Society
2
Smith, George, 1804-1882
2
Academy of Natural Sciences of Philadelphia
1
Barker, Elihu
1
Boone, Daniel, 1734-1820
1
British Emigrant Society (Susquehanna County, Pa.)
1
Browne, Peter A. 1782-1860
1
Browne, Peter Arrell, 1782-1860
1
Clarke, Samuel, 1599-1682,
1
Cross, Thomas, active 1632-1682,
1
Dillingham, William Henry, 1790-1854
1
Filson, John, approximately 1747-1788
1
Fisher, W. L. 1781-1862
1
Ford, Lisa L.
1
Franklin, Benjamin, 1706-1790
1
Gaywood, Richard, active 1650-1680,
1
Genealogical Society of Pennsylvania Volunteers
1
Geological Society of Pennsylvania
1
Geological Society of Pennsylvania (Philadelphia)
1
Heart, Jonathan, 1748-1791
1
Hollenbach, Raymond E.
1
Hutchins, Thomas, 1730-1789
1
Imlay, Gilbert, 1754?-1828?
1
Johnson, Charles Britten, 1788?-1835
1
Kennedy, Patrick
1
Klein, Calvin J.
1
Mercer, Henry C., 1856-1930
1
Meyers, Amy R. W.
1
Milbourn, Thomas, -1703,
1
Miller, Hank,
1
Moore, Clarence B. 1852-1936
1
Nebinger, Andrew, 1819-1886
1
North American Land Company
1
Osborne, Peter
1
Osborne, Peter,
1
Pearce, George W., 1814-1864
1
Pennsylvania Court of Common Pleas (Philadelphia City)
1
Pennsylvania Yearly Meeting of Progressive Friends (1853-1940) Meeting
1
Pennsylvania. District Court (Philadelphia City and County)
1
Perry, John B., 1801?-1865
1
Reinford, Wilmer L.
1
more ...