Author
Chester County Cabinet of Natural Science (West Chester, Pa.)
8
Darlington, William, 1782-1863
6
Judah, Naptali
2
Moore, John, 1729-1802
2
Browne, Peter A. 1782-1860
1
Browne, Peter Arrell, 1782-1860
1
Chester County Cabinet of Natural Science, West Chester, Pa
1
Delaware Geological Survey
1
Delaware. Department of Natural Resources and Environmental Control
1
Delaware. Division of Parks and Recreation
1
Dillingham, William Henry, 1790-1854
1
Discover Brandywine Valley Public Relations Association
1
Faill, Rodger T.
1
Fisher, W. L. 1781-1862
1
Goethe, Johann Wolfgang von, 1749-1832
1
Harris, Thaddeus William, 1795-1856
1
Overdevest, Gaye
1
Parish, Charles W.
1
Pearce, George W., 1814-1864
1
Penn Bureau of State Parks
1
Penn Bureau of Topographic and Geologic Survey.Pennsylvania Bureau of State Parks
1
Penn Dept. of Environmental Resources
1
Pennsylvania Bureau of State Parks White Clay Creek Preserve
1
Pennsylvania Dept. of Conservation and Natural Resources Bureau of State Parks
1
Pennsylvania Yearly Meeting of Progressive Friends (1853-1940) Meeting
1
Perry, John B., 1801?-1865
1
Rush, Samuel, 1795-1859
1
Thompson, John,
1
Worthington, Wilmer, 1804-1873
1