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Classification 105: Foreign Counterintelligence

In the mid 1950s, Classification 105 was used to investigate aliens, especially from Russia and Eastern Europe. It was also to investigate the Ku Klux Klan, anti-Semitic groups and other hate groups. In 1959, these investigations were transferred to Classification 157: Extremist Matters; Civil Unrest. In the late 1950s and early 1960s investigations focused increasingly on Puerto Rican groups and especially on pro-Castro and anti-Castro Cuban groups. In the 1960s, Classification 105 was also used to investigate Chinese communist activities.

In 1971 the classification was renamed Internal Security-Nationalistic Tendency (Foreign Intelligence), but investigations went beyond the activities of foreign intelligence services to include groups working for foreign political movements, such as IRA supporters, Arab terrorists, the Jewish Defense League, Yugoslav émigré groups, and Cuban groups.

In September 1977, classification 105 was limited to foreign counterintelligence investigations directed only at Russia, as other new classifications were established for other operations that previously had been included. The new classifications are:

199: Foreign Counterintelligence - Terrorism
200: Foreign Counterintelligence - China
201: Foreign Counterintelligence - Satellite
202: Foreign Counterintelligence - Cuba
203: Foreign Counterintelligence - All Other Countries

NARA online catalog descriptions of holdings for 105: Foreign Counterintelligence

Record Group NARA IdentifierSeries Title
65566594Headquarters Files from Classification 105 (Foreign Counterintelligence) Released Under the Nazi War Crimes and Japanese Imperial Government Disclosure Acts
656862923Classification 105 (Foreign Counterintelligence), FBI Headquarters Case Files
656862625Classification 105 (Foreign Counterintelligence), FBI Headquarters Case Files

Undescribed Records

Some records under 105: Foreign Counterintelligence are not yet described in NARA's online catalog. Please contact NARA's Special Access Program at with your reference request.

Record Group Finding Aid EntrySeries Title
65UD 10D 25 Classification 105 (Foreign Counterintelligence) Headquarters Case Files
65UD 10D 27 Classification 105 (Foreign Counterintelligence) Headquarters Case Files
65 UD 13D 1 Classification 105 (Foreign Counterintelligence) Field Office Case Files - Memphis, Tennessee

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