• 18 Wisconsin Historical Society Library
• 6 Law Library

• 16 Books
• 2 Journals, Magazines, Newspapers
• 2 Microforms

• 15 United States. Internal Revenue Service
• 6 Tax administration and procedure
• 2 United States. Internal Revenue Service. Assistant Commissioner (Computer Services)
• 1 Income tax
• 1 Tax collection
• 1 Tax returns
• 1 Taxation
• 1 Telephone
• 1 United States. Internal Revenue Service. Hardware Division
• 1 United States. Internal Revenue Service. National Computer Center

• 15 United States. Internal Revenue Service
• 1 United States. Internal Revenue Service. Hardware Division
• 1 United States. Internal Revenue Service. National Computer Center

• 18 English

• 8 United States
• 1 Dyersville
• 1 Dyersville (Iowa)
• 1 Iowa

• 18 Telephone directories
• 7 Directories
• 7 Directory
• 7 directories
• 1 Government publications

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