Author
Adams, Randolph Greenfield, 1892-1951
1
Bowers, Douglas
1
Edwards, Everett Eugene, 1900-
1
Fitzpatrick, John Clement, 1876-1940
1
Library of Congress. Manuscript Division
1
U.S. Dept. of Agriculture Agricultural History Branch
1
United States National park service Historical division
1
University of California, Davis. Agricultural History Center
1
William L. Clements Library
1