Shortage of railroad equipment for transportation purposes. Part 2, November 4, 5, and 6, December 23, 1943; January 5, 13, 15, 17, and 18, February 7, 1944 : hearings before a subcommittee of the Committee on Interstate Commerce, United States Senate, Seventy-eighth Congress, first session and second sessions pursuant to S. Res. 185, a resolution to investigate the causes of, and means of relieving, the shortage of railroad cars for the transportation of grains in the Northwestern states