Author
Philadelphia Commission on AIDS
4
United States. Bureau of Chemistry and Soils
4
Leonard Davis Institute of Health Economics
3
Pennsylvania State College. School of Agriculture
3
Atkinson, C. H. 1906-
2
Morse, H. N. 1887-1977
2
Roach, Hannah Benner
2
Scull, James
2
Simmons, C. S. 1900-
2
Unknown author
2
Administrative Management Society Philadelphia Chapter
1
Armstrong, John
1
Armstrong, Kay
1
Ashmead, Jacob
1
Bennett, Hugh H. 1881-1960
1
Brooke, Robert 1770-1821
1
Brown, Lindsey Andrew, 1906-
1
Browne, Peter A. 1782-1860
1
Bryant, Jay Clarke, 1905-
1
Burke, R. T. Avon
1
Burke, R. T. Avon 1878-
1
Burke, R. T. Avon, 1878-
1
Bush Hill estate
1
CLIO Group, Inc
1
Citizens' Committee on the Finances of Pennsylvania
1
Clemson, Thomas Green, 1807-1888
1
Codorus Furnace and Forge (Hellam, Pa.)
1
Colley, Fred R.
1
Collins, Zaccheus 1764-1831
1
De Krafft, Charles
1
Dorsey, Greenberry d. 1807
1
Drum, Augustus 1815-1858
1
Dunlap, John 1747-1812
1
Ellerman, Donald
1
Fackenthal, B. F. (Benjamin Franklin) 1851-1941
1
Finley, R. R. 1906-
1
Franklin Institute (Philadelphia, Pa.). Science Museum
1
Frey, George
1
Galbraith, Bartram
1
Geological Society of Pennsylvania
1
Germantown and Perkiomen Turnpike Company
1
Gibbons family
1
Gutiérrez, Manuel J.
1
Hice, Richard Robert, 1865-
1
Higbee, Howard William, 1899-
1
Hispanic Federation for Social and Economic Development
1
Historical Society of Pennsylvania
1
Hopkins, Albert Cole 1837-1911
1
Hosterman, James L., 1909-
1
James Madison Pamphlet Collection (Library of Congress)
1
more ...