Pentagon Papers
It was classified Top Secret-Sensitive, although Sensitive was not an official classification and only indicated that access should be controlled.
Role range: 1960-1975 – 1968-1969
Historical biography archive · Updated 2026-11-03
Clark McAdams Clifford Biography and Timeline
Follow Clark McAdams Clifford through 3 dated historical records for United States of America.
Clark McAdams Clifford, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
1969–1969Years on this page
1969
Pentagon Papers
McNamara left the Defense Department in February 1968, and his successor Clark M. Clifford received the finished study on January 15, 1969, five days before Richard Nixon's inauguration – although Clifford claimed he never read it.
Role range: 1960-1975 – 1968-1969
Pentagon Papers
The study contained 3,000 pages of historical analysis and 4,000 pages of original government documents in 47 volumes.
Role range: 1960-1975 – 1968-1969
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.