PROFS Message System Backup Tapes: Inventory, Deletion Markers, and Iran-Contra Investigation Recovery

REGISTER

• → SHARES-EVENT Reagan Administration Authorization Records for Iran Arms Sales and Contra Diversion [file] — This dossier concerns the same Iran-Contra affair and the underlying records of the Reagan administration.
• → SHARES-EVENT Reagan's Personal Knowledge of Contra Funding and Boland Amendment Violations: NSC Correspondence and Declassified Records [file] — This dossier also examines aspects of the Iran-Contra affair and the actions of Reagan administration officials.
• → PARALLEL-PATTERN Gulf of Tonkin Sonar and Radar Recordings: Chain of Custody, Analysis, and Document Preservation (1964–Present) [file] — Both dossiers involve the recovery and forensic analysis of historical data tapes (sonar/radar vs. computer messages) to reconstruct events and verify claims.
• → PARALLEL-PATTERN MKUltra Parallel Documentation: Federal Agency Backup Records and the 1973 Destruction [file] — Both dossiers deal with the issue of data preservation despite attempts at destruction or deletion, due to backup or parallel recording systems.
• → PARALLEL-PATTERN MKUltra Destroyed Files: Surviving Index Cards and Metadata Records [file] — Both dossiers touch upon the discovery or attempted discovery of records that were believed to be destroyed, highlighting the challenges of evidence reconstruction.
• ← SHARES-EVENT PROFS Backup Tapes: Forensic Evidence of Intentional Deletion Markers [file] — This dossier directly expands on the investigation of PROFS tapes and deletion markers during the Iran-Contra investigation.