Apollo 11 landing

This incident is Case 55 in Isaac Koi's "Top 100" article,  since it was referred to in 52 of the books covered by that article.

Bolender memo on terminating Bluebook

On 20 October 1969, Brigadier General C H Bolender wrote a memo recommending termination of Project Blue Book. He stated that “reports of unidentified flying objects which could affect national security are made in accordance with JANAP 146 or Air Force Manual 55-11, and are not part of the Blue Book system”. Thus although “termination of Project Blue Book would leave no official federal office to receive reports of UFOs”, he commented that “reports of UFOs which could affect national security would continue to be handled through the standard Air Force procedures designed for this purpose”

Apollo 12 sighting

As with several other alleged astronaut sightings, a wide variety of contradictory dates are given for the alleged sighting in the various relevant sources.