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> RECORD OBS-0892 | status: PARTIALLY SUBSTANTIATED | filed 2026-07-31
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Project MERRIMAC

RecordOBS-0892
CategoryGovernment/Surveillance
StatusPARTIALLY SUBSTANTIATED
SummaryProject MERRIMAC was a CIA domestic espionage operation that infiltrated and surveilled Washington-based anti-war groups. It was coordinated under the CIA's Office of Security and was a branch of Operation CHAOS. The project gathered information on potential threats to CIA personnel and facilities.
OriginBelieved to have begun in February 1967, as part of the CIA's domestic surveillance efforts during the Vietnam War era.
Claimed
  • The CIA infiltrated anti-war groups in Washington, D.C., to gather intelligence.
  • The project collected general information on the infrastructure of targeted communities.
  • It operated alongside Project RESISTANCE and fed information to Operation CHAOS.
Evidence / consensusThe existence of Project MERRIMAC is confirmed by historical documents and the Church Committee, though details are limited. It was part of a broader pattern of CIA domestic surveillance that was later criticized and curtailed.
> OBSERVER NOTE:
Another confirmed program. The name is sometimes spelled MERRIMACK. The archival record is thin, but the program's existence is not disputed.

Sources

  1. Project MERRIMAC - Wikipedia
  2. Freedom of Information Act Electronic Reading Room | CIA FOIA (foia.cia.gov)

Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.