13 U.S. Code [§ 10. Repealed. Pub. L. 86–682, § 12(a), Sept. 2, 1960, 74 Stat. 708, eff. Sept. 1, 1960]

Section, act Aug. 31, 1954, ch. 1158, § 1, 68 Stat. 1014, related to free transmittal of official mail in census matters.