Petroleum : Hearing[s] before a subcommittee of the Committee on interstate and foreign commerce, House of Representatives, Seventy-fifth Congress, first session, on S. 790 and H.R. 5366, to appeal section 13 of the act entitled "An act to regulate interstate and foreign commerce in petroleum and its products by prohibiting the shipment in such commerce of petroleum and its products produced in violation of state law, and for other purposed", approved Feb. 22, 1935 ; April 27, 28, 29 and May 3, 1937.