Email Record: Estimate of appropriation for the War Department for development of rotary-wing and other aircraft. Communication from the President of the United States transmitting a supplemental estimate of appropriation in the amount of $1,125,000 for the fiscal year ending June 30, 1939, to remain available until expended, for the War Department, for developing of rotary-wing and other aircraft authorized by the act approved June 30, 1938.