Related Collections at National Agricultural Library:
Beaty, Layne R., Papers, 1926-1979. Manuscript Collection 17.
USDA History Collection. (Series I, II, VII, IX). Manuscript collection 182.
Wallace, Henry Cantwell, Papers. (Henry C. Wallace, Henry A. Wallace's father, was Secretary of Agriculture from 1921 to 1924.) Manuscript Collection 108.
Warren, Donald Cameron, Papers. American Poultry Historical Society Collection. Manuscript Collection 193.
Related Collections at Other Institutions:
The Papers of Henry A. Wallace, donated by him and his family are held at the University of Iowa Libraries Special Collections Department. These include personal papers and research materials. The online Collection Guide is available at: http://collguides.lib.uiowa.edu/?MSC0177.
The National Archives and Records Administration (NARA) houses photographs from USDA events in Record Group 16: "Records of the Office of the Secretary of Agriculture" The finding aid is located at: http://research.archives.gov/description/345 NARA also houses photographic collections from Wallace's tenures as Vice President and Secretary of Commerce.
The Franklin D. Roosevelt Presidential Library contains a number of collections relating to Henry A. Wallace. The online finding aids catalog may be found at https://fdrlibrary.org/
The Library of Congress houses an archival manuscript collection of the "Papers of Henry A. Wallace, 1931-1945 (bulk 1941-1945)" (mm 78044487). The complete three-volume work, The Reminiscences of Henry Agard Wallace, is in the Library's book and microfilm collection.
United States, Agricultural History Branch. Century of Service: The First 100 Years of the United States Department of Agriculture. (Washington, DC: Centennial Committee, USDA, 1963).
Rogers, Earl M., ed. and Dunlap, Leslie W. "Guide to a Microfilm Edition of the Henry A. Wallace Papers at The University of Iowa." (Iowa City: University of Iowa Libraries, 1974).
"Wallace, Henry Agard." National Cyclopedia of American Biography, Vol. 53. (New York: James T. White & Company, 1971) 15-17.
For further research on Henry Agard Wallace:
Blum, John Morton, ed. The Price of Vision: The Diary of Henry A. Wallace, 1942-1946. (Boston: Houghton Mifflin Company, 1973).
National Agricultural Library. "Henry A. Wallace References Outside the USDA History Collection." http://www.nal.usda.gov/exhibits/speccoll/exhibits/show/usda-history-collection/reference-pages/henry-agard-wallace
Schlesinger, Jr., Arthur M. The Age of Roosevelt: The Coming of the New Deal. (Boston: Houghton Mifflin Company, 1958).