Author
Chamber of Commerce of Greater Philadelphia
5
Penjerdel (Corporation)
5
Craig, Peter Stebbins
4
Delaware Valley Regional Planning Commission
4
Abbott, Charles C. 1843-1919
3
Chilstrom-Meixner, Esther, 1904-
3
Johnson, Amandus, 1877-1974
3
Weslager, C. A. 1909-1994
3
Beard, Lucienne
2
Brigham, Diane
2
Carson, Hampton L. 1852-1929
2
Delaware Valley Council
2
Elise Willing Balch Collection
2
Harding, John J.
2
Historical Society of Pennsylvania
2
Hoffecker, Carol E.
2
Holm, Thomas Campanius, approximately 1670-1702
2
Holm, Thomas Campanius, approximately 1670-1702,
2
Knapp, Edwin H.
2
Levy, Barry
2
Libby, Valencia
2
Lindeström, Peter Mårtensson, 1632-1691,
2
Mackenzie, Marianne
2
Museum Council of Philadelphia
2
Museum Council of Philadelphia and the Delaware Valley
2
New Jersey State Museum
2
Samuels, Gayle Brandow
2
Taylor, Hal
2
Weaver, Ethan Allen, 1853-1929
2
Werner, Johan Heinrich, -1735,
2
Weslager, C. A. 1909-
2
Williams, Lorraine E.
2
Alliance for Watershed Education of the Delaware River
1
Alrich, Bill
1
Ambrose, George W.
1
American Association of Teachers of Spanish and Portuguese. Southeastern Penna. Chapter. Bicentennial Committee
1
American Society of Civil Engineers. Philadelphia Section
1
American Swedish Historical Museum (Philadelphia, Pa.)
1
Appalachian Mountain Club. Delaware Valley Chapter
1
Barnard, Edward Sibley, 1936-
1
Benner, Craig A.
1
Berman, Nancy
1
Biagi, Ernest L.
1
Boucher, Jack E.
1
Bradley, John
1
Brandywine Conservancy
1
Briger, Catriona Bull
1
Butler, Jon, 1940-
1
Carter, Edward C., II, 1928-2002
1
Cassidy, Brian
1
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