Author
Atack, Jeremy
1
Bateman, Fred, 1937-
1
Benes, Jane Montague
1
Benes, Peter
1
Cumberland County Historical Society (Pa.)
1
Fite, Gilbert Courtland, 1918-
1
Jensen, Joan M.
1
Lemon, James T.
1
North Dakota Agricultural Experiment Station (Fargo)
1
Pozzetta, George E.
1
Shaull, Roy G.
1
Shover, John L., 1927-
1
United States. Department of Agriculture
1
Willson, E. A.
1