Amending Securities act of 1933, Securities exchange act of 1934, Trust indenture act of 1939, and Investment company act of 1940. : Hearing before the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-third Congress, second session, on H.R. 7550, a bill to amend certain provisions of the Securities act of 1933, as amended, the Securities exchange act of 1934, as amended, the Trust indenture act of 1939, and the Investment company act of 1940, and S. 2846, an act to amend certain provisions of the Securities act of 1933, as amended, the Securities exchange act of 1934, as amended, the Trust indenture act of 1939, and the Investment company act of 1940. March 19, 1954.