Author
Greater Philadelphia Tourism Marketing Corp
3
ADC (Firm)
2
Delaware County Institute of Science (Media, Pa.)
2
Matlack, T. Chalkley
2
A.H. Mueller & Co
1
Bliss, Ward Raymond
1
Christman, Duane
1
Cox, Harold E.
1
Delaware County (Pa.) Citizens
1
Delaware County (Pa.) Committee
1
Delaware County Historical Society
1
Delaware County Medical Society (Pennsylvania)
1
Franklin Maps (Firm)
1
Gibson, A. G.
1
Irish American Association of Delaware County (Chester, Pa.)
1
Lathrop, J. M.
1
Leiper, George Gray, 1786-1868
1
Lewis, Frank Grant, 1865-
1
Moore, G. W.
1
Mueller, A. H.
1
Ogier, St. Julian
1
Pearson, Benjamin
1
Porch, Marvin E.
1
Republican League of Delaware County
1
Rupp Collection (Athenaeum of Philadelphia)
1
Schieck, Paul,
1
St. Paul's Episcopal Church, Chester, Pa
1
Sundman, Jim,
1
Walton, Joseph Solomon, 1855-1912
1
Wright, F. Edward
1