Author
Historical Society of Pennsylvania
2
American Federation of Teachers. National Academic Freedom Committee
1
American Philosophical Society
1
Andrews, Charles C.,
1
Awbury Arboretum (Philadelphia, Pa.)
1
Bacon, Margaret Hope
1
Brown, Carol H.
1
Calam, John
1
Chance, Janet
1
Christiansburg Industrial Institute
1
Cohen, Amy
1
Dewees, Sarah B.
1
Dewees, Watson W.
1
Dunlap, William Cook, 1884-
1
Franek, Mark
1
Friends Council on Education (Philadelphia, Pa.)
1
Friends' Freedmen's Association
1
Germantown Historical Society
1
Harrison, Eliza Cope
1
Hodge, Susan Winslow
1
Houting, Beth Twiss
1
King, Cornelia S., 1953-
1
Library Company of Philadelphia
1
Library of Theodore Dreiser (University of Pennsylvania)
1
Montague, C. J.
1
National History Day
1
Newcomen Society in North America
1
Pettit, Thomas M'Kean, 1797-1853
1
Rubenstein, Frank Jay
1
Society of Friends
1
Stevens, Robert 1933-2021
1