Pub. L. 82-425, tit. II, under "Postal Operations"
Postal Operations
Postal Operations For expenses necessary for postal operations, not otherwise provided for, and for other activities conducted by the Post Office Department pursuant to law, including $500,000 to be available exclusively for manufacture and procurement of improved devices for postal operations and other activities; $510,000 to be available exclusively for the purchase of trucks, tractors, and trailers; and storage and repair of vehicles owned by, or under control of, units of the National Guard and departments and agencies of the Federal Government where repairs are made necessary because of utilization of such vehicles in the postal service; $2,150,000,000: Provided, That during the current fiscal year the inventory of trucks and tractors of the Post Office Department shall not exceed eighteen thousand such vehicles at any time.