Actions for Investigation of the National Defense Program. Part 37, Inter-American Highway [electronic resource] : hearings before the United States Senate Special Committee Investigating the National Defense Program, Eightieth Congress, first session and Seventy-Ninth Congress, first session and Seventy-Ninth Congress, second session, on July 13, 17, 26, 1945, Aug. 24, 29-31, Sept. 3, 4, 27, 28, 1946, Mar. 31, 1947