[50] Section 20 of the Criminal Code; 18 U.S.C. § 242.

[51] 325 U.S. 91, 94, 95.

[52] Ibid. 101.

[53] Ibid. 103.

[54] Ibid. 113, 135.

[55] Ibid. 154.

[56] 341 U.S. 97 (1951).

[57] See also Koehler et al. v. United States, 342 U.S. 852 (1951).

[58] United States v. Petrillo, 332 U.S. 1 (1947).

[59] United States v. Darby, 312 U.S. 100, 125 (1941).