Author
Polonus Philatelic Society
2
Bibliophile Society (Boston, Mass.)
1
Bush, Alfred L.
1
Danky, James Philip, 1947-
1
Delaware Public Archives Commission
1
Delaware. Bureau of Archives and Records
1
Fraser, Robert S., 1943-
1
Genealogical Society of Pennsylvania
1
H.C. Roberts Electric Supply Co. (Philadelphia)
1
Hady, Maureen E., 1952-
1
McKinstry, E. Richard
1
Midland Rare Book Co. (Mansfield, Ohio)
1
New Jersey Historical Society
1
New Jersey Historical Society (Newark, N.J.)
1
Princeton University. Library
1
Reid, Judith P.
1
Sotheby Parke Bernet Group Ltd
1
Sotheby's (Firm)
1
State Historical Society of Wisconsin
1
Strawbridge & Clothier
1
Victor Talking Machine Co
1
Walsh, Barbara B.
1