The President's Intelligence Checklist (PICL), which became President Kennedy's primary written intelligence source, was first delivered on 17 June 1961.
Notes on verification
Multiple independent, high-quality sources (CIA official records, CNN, TIME, Wikipedia, White House Historical Association) corroborate both the June 17, 1961 date and PICL's role as Kennedy's primary written intelligence source. [cascade flags: wikipedia_dropped_other_sources_exist | tier=silver indep_score=0.833 clusters=3 claim_tier=notable]
Sources
- MK/ULTRA | CIA FOIA (foia.cia.gov) (seed:conspiracy_and_investigation)
- https://www.cnn.com/2015/09/16/politics/cia-declassifies-daily-presidential-briefing/index.html (corroboration)
- https://time.com/4673605/first-presidents-daily-brief/ (corroboration)
- https://www.whitehousehistory.org/transmission-impossible-the-communication-failures-that-created-the-situation-room (corroboration)