Boyle's letter to Herbert Hoover, Secretary of Commerce, 1924 , on hedging, and to President Hoover, 1932 on immigration laws for foreign students, 1924, 1932, Box: 2. James E. Boyle papers, 21-10-210. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/33758 Accessed April 09, 2026.