Regulations no. 3 relating to the tax on opium manufactured in the United States for smoking purposes under the Act of January 17, 1914 and the acts of March 3, 1927 and June 14, 1930 : Narcotic-internal revenue regulations
Joint smoking opium regulations made by the commissioner of narcotics and the commissioner of internal revenue with the approval of the secretary of the Treasury. At head of title: U.S. Treasury department. Bureau of narcotics.