The United States Government spends significant financial, human, and technical resources on intelligence operations and analysis to protect national secrets and learn the national secrets of other countries.  While much of this information must remain secret, significant amounts of government information on intelligence activities can be obtained from printed sources and the Internet.  Purdue Libraries have many government documents on intelligence with most of these being located in the HSSE Library. Subject headings you can use to search for these materials on the Library Catalog include:

Arms Control--Verification
Information Warfare--United States
Intelligence Service--United States
Military Intelligence--United States
Security Classification (Government Documents)--United States
Space Surveillance

The principal index for U.S. Government documents is the Monthly Catalog of U.S. Government Publications HSSE REF & Periodicals 016.353 Un36. An online version of this index covers 1994-present. U.S. Government publications can also be searched in the GPO Index covering from 1976-present.

Additional indexes for locating government publications on intelligence activities include the Congressional Information Service (CIS) Index HSSE REF 328.73005 C76 covering recent congressional publications, the CIS U.S. Serial Set Index HSSE REF 328.73005 C761c covering congressional publications from 1789-1969, the CIS Index to U.S. Executive Branch Documents 1789-1909 HSSE REF 351.73 C497 1990, and CIS Index to U.S. Executive Branch Documents 1910-1832 HSSE REF 351.73 C497 1996.

Legal and regulatory information on intelligence activities can be found in:

U.S. Government agencies such as the Central Intelligence Agency, Defense Intelligence Agency, and congressionally or presidentially appointed commissions produce intelligence-related publications.  Examples of such publications include:

Congressional publications are excellent sources of intelligence information since
congressional committees are responsible for funding and overseeing intelligence
agency activities. Examples of such congressional resources include:                                 

Internet Resources

Increasing volumes of government information can be found on the Internet including that dealing with intelligence.  The Purdue University Libraries Documents Department homepage is a good starting point for accessing these sources.

Other useful U.S. Government intelligence Internet resources include:

Selected Foreign Government Intelligence Sites