Congressional Record
81 Cong. Rec. (Bound) - May 17, 1937: 4668. Government Publishing Office. Web.
81 Cong. Rec. (Bound) - June 10, 1937: 5516 (statement of Sen. Capper). Government Publishing Office. Web.
81 Cong. Rec. (Bound) - June 21, 1937: 6107. Government Publishing Office. Web.
82 Cong. Rec. (Bound) - December 1, 1937: 633, 634. Government Publishing Office. Web.
82 Cong. Rec. (Bound) - December 20, 1937: 1945. Government Publishing Office. Web.