The Office of National Narcotics Intelligence (ONNI) was a federal law enforcement agency under the Justice Department that dealt clandestinely in the domestic illegal drugs trade. ONNI was founded in August 1972 under order of President Richard M. Nixon. The agency was headed by former FBI intelligence chief William C. Sullivan until ONNI was consolidated into the newly created Drug Enforcement Administration in July 1973 (along with the Bureau of Narcotics and Dangerous Drugs, the Office of Drug Abuse Law Enforcement, some Customs Intelligence Offices, and some of the Central Intelligence Agency).
- Agency of Fear by Edward J. Epstein
- The Great Heroin Coup - Drugs, Intelligence, & International Fascism by Henrik Kruger