Petroleum investigation (gasoline and rubber) : hearings before a subcommittee of the Committee on Interstate and Foreign Commerce, House of Representatives, Seventy-seventh Congress, second session, pursuant to H. Res. 290 (76th Congress) and H. Res. 15, H. Res. 118, and H. Res. 383 (77th Congress), resolutions relating to petroleum investigation in connection with national defense, including petroleum pipe-line transportation to the Atlantic seaboard and in the southeastern states, November 23, 24, 25, 30, and December 1 and 4, 1942. Supplement to hearings held in February, March, and May 1942