Author
New Jersey State Agricultural Society
5
John Baer's Sons
3
John Bear (Firm)
3
Philadelphia Society for Promoting Agriculture
3
Scheffer & Beck
3
Bliss, George S.
2
Coleman, W. W. 1835-1888
2
Egelmann, Charles Frederick
2
Heifer International
2
Hitchcock, I. Irvine 1793-1868
2
Maryland State Agricultural Society
2
Pennsylvania State College
2
Peters, Richard, 1743-1828
2
Roberts, Edward P.
2
Sands, Samuel
2
Sands, William E.
2
Skinner, John S. 1788-1851
2
Smith, Gideon B.
2
United States. Weather Bureau
2
Worthington, N. B.
2
Academy of Natural Sciences of Philadelphia
1
Agricultural History Society
1
American Society of Naturalists
1
Barker, Moore & Mein Medicine Co
1
Barker, Moore & Mein Medicine Co. (Philadelphia, Pa.)
1
Barnwell, R.G.
1
Bell, Edwin
1
Bryson, James H.
1
Buel, J.
1
Cale, G. H.
1
Clarke, William Fletcher
1
Collom, William
1
Dadant, C. P. 1851-1938
1
Dadant, James Camille
1
Dadant, M. G.
1
Darlington, J. Lacy
1
De Bow, James Dunwoody Brownson
1
E.I. du Pont de Nemours & Company
1
Essex Institute
1
Farmers' Club of Pennsylvania
1
Federation of Jewish Farmers of America
1
Foster, Thomas
1
Haldeman
1
Hanson, H. C.
1
Mease, James, M.D.
1
Newman, Thomas Gabriel, 1833-1903
1
Optic, Obadiah, pseud
1
Pellett, Frank C. 1879-1951
1
Pennsylvania Agricultural Society
1
Pennsylvania Association for Sustainable Agriculture
1
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