Deficiency and supplemental estimates of appropriation and proposed provision affecting an existing appropriation for the Post Office Department. Communication from the President of the United States transmitting deficiency estimate of appropriation for the fiscal year 1945 in the amount of $595,000, and supplemental estimates of appropriation for the fiscal year 1946 in the amount of $1,320,200, in all $1,915,200, together with a draft of a proposed provision affecting an existing appropriation for the fiscal year 1946, for the Post Office Department.