Inland waterways corporation--Extension of barge line : hearings before the Committee on Interstate and Foreign Commerce, House of Representatives, Seventieth Congress, first session, on H.R. 10710, a bill to amend the act entitled " An act to create the inland waterways corporation for the purpose of carrying out the mandate and purpose of Congress, as expressed in section 201 and 500 of the Transportation act, and for other purposes," approved June 3, 1924. March 27-30, April 4-6 1928.