Supplemental estimate of appropriation for the War Department, 1941. Communication from the President of the United States transmitting supplemental estimate of appropriation, amounting to $1,100,000, for the fiscal year ending June 30, 1941, to remain available until expended, for the War Department, for payment of the share of the United States of the cost of alteration of bridges over navigable waters of the United States under the provisions of the Act of June 21, 1940 (Public, No. 647, 76th Cong.).