Lumber. Export of lumber, hearings, 76th Congress, 3d session, on H. R. 7463, to amend merchant marine act, 1936, as amended, to provide for extending aid to producers of lumber and manufactured timber products, and H. R. 7505, to amend merchant marine act, 1936, as amended, to provide for extending aid to producers of lumber and manufactured timber products, Mar. 27, 1940.