Ashdown, Donald, "Investigations of the Control of Lettuce Yellows through the Control of the Aster Leafhopper" (Bankhead-Jones Project 50), 1942-1943, 1946-1947

Ashdown, Donald, "Investigations of the Control of Lettuce Yellows through the Control of the Aster Leafhopper" (Bankhead-Jones Project 50), 1942-1943, 1946-1947, Box: 7, Folder: 5. William Arthur Rawlins papers, 21-23-1775. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/130605 Accessed October 19, 2025.