Author
Albertype Co
26
Barton, Benjamin Smith, 1766-1815
2
Graham, Daniel A.
2
Graham, Daniel A., 1948-
2
Harpel, Luther G.
2
John James Audubon Center at Mill Grove
2
Pennsylvania Game Commission
2
Stone, Witmer, 1866-1939
2
Valley Forge Audubon Society
2
Warren, Benjamin Harry, 1858-1926
2
Barone, Robin,
1
Brauning, Daniel W.
1
Bucks County Historical Society
1
Delaware Valley Ornithological Club
1
Gordon, Seth E.
1
Graves, Joseph H.
1
Hawk Mountain Sanctuary Association
1
Lee, Daniel,
1
Liberty Bell Bird Club
1
Little Bird Bakery & Cafe
1
Mansfield, Ira F. b. 1842
1
Melick, C.F.
1
Mulvihill, Robert S.
1
Pennsylvania
1
Pennsylvania Audubon Society
1
Philadelphia Record
1
Robbins, Franklin, 1917-1994
1
Robin Hood Club
1
Salvin, Osbert, 1835-1898,
1
Smith, Ned, 1919-1985
1
Turnbull, William Paterson, 1830-1871
1
Watson, Kevin
1
Williams, Toni
1
Willughby society
1
Wilson, Andrew M.
1
Wright, John M.
1
Yerkes, Harman
1