United States Code Title 26 — Internal Revenue Code [§ 4521. Repealed. Pub. L. 87–456, title III, § 302(d), May 24, 1962, 76 Stat. 77] [§ 4521. Repealed. Pub. L. 87–456, title III, § 302(d), May 24, 1962, 76 Stat. 77]