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Superintendent of Documents Call Numbers

The Superintendent of Documents (SuDocs) classification system for publications generally groups together documents by issuing agency. SuDocs numbers consist of a letter, designating the particular issuing agency, followed by numbers identifying subordinate bureaus within the agencies and specific publications. Below is a list of prefixes and their corresponding agencies:

  • A: Agriculture Department
  • C: Commerce Department
  • C3: Census Bureau (Commerce Dept.)
  • D: Defense Department
  • E: Energy Department
  • ED: Education Department
  • GA: General Accounting Office
  • HE: Health and Human Services Department
  • I: Interior Department
  • I19: U.S.Geological Survey (Interior Department)
  • J/Ju: Justice and Judiciary
  • L: Labor Department
  • LC: Library of Congress
  • NAS: National Aeronautics and Space Administration
  • S: State Department
  • T: Treasury Department
  • X,Y: Congress