United States Office of Internal Revenu
Hand-Book of the U. S. Tax Law, with All the Amendments, to March 4 1863
Internal-Revenue Manual
Regulations 45 Relating to the Income Tax and War Profits and Excess Profits Tax Under the Revenue Act of 1918
Regulations No. 50 Relating to the Capital Stock Tax Under the Revenue Act of 1918
Regulations No. 53 Relating to the Tax on Soft Drinks, Ice Cream and Simular Artical Sold at Soda Fountains or Simular Places of Business Under the Revenue Act of 1918
Regulations No. 56 Relating to the Collection of Tax on Motion Picture Films Title IX, Section 906 of the Revenue Act of 1918
Report of the Commissioner of Internal Revenue for the Fiscal Year Ended June 30
Report of the Commissioner of Internal Revenue on the Operations of the Internal Revenue System for the Year Ending