Author
A.H. Mueller & Co
6
ADC (Firm)
8
Acrelius, Israel, 1714-1800
2
Adams Apple Press
1
Adams, Richard C. 1864-1921
1
Albertype Co
5
Allen, Clifford P. 1841-
3
American Imprint Collection (Library of Congress)
2
American Philosophical Society. Historical & Literary Committee
1
American Society of Civil Engineers. Philadelphia Section
1
American Sunday-School Union
1
American-Finnish Society of the Delaware Valley
1
Andariese, Walter S.
1
Antelope Valley Genealogical Society (Lancaster, CA)
1
Appalachian Mountain Club. Delaware Valley Chapter
1
Arfwedson, Carolus David
1
Armstrong, Edward, 1846-1928
1
Asbell & Associates
1
Ash, Joshua W.
1
Ashmead, Henry Graham, 1838-1920
8
Association of Professional Genealogists (U.S.)
1
Bailey, Sherry
1
Bailey, W.
1
Bainbridge, William, 1774-1833
1
Baist, G. Wm. 1859-1927
2
Baltimore, Charles Calvert, Baron, 1699-1751
1
Baltimore, Frederick Calvert, Baron, 1731-1771
1
Barber, David G.
1
Barber, Edwin Atlee, 1851-1916
1
Barker, Elizabeth
1
Barker, James Nelson, 1784-1858
2
Barnard, Edward Sibley, 1936-
1
Barry, Joanne
1
Barthel, Otto
1
Bauer, Nancy Marshall
1
Bayliff, William H.
2
Beach, Ephraim
1
Beard, Lucienne
2
Becker, Marshall Joseph
1
Beidleman, H. Ferdinand 1872-
1
Bell Telephone Company of Philadelphia (Pa.)
1
Bell, Clark, 1832-1918
1
Bendbow, Hesper
1
Biagi, Ernest L.
1
Bice, Clare
1
Birkinbine, Henry P. N.
1
Bjorkman, Gwen Boyer, 1933-
1
Black, Edgar N.
1
Bliss, Eugene Frederick, 1836-1918
1
Bliss, Ward Raymond
1
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