Dr Ken Johnston Sr was a consultant employed by Brown & Root in the Lunar Receiving Laboratory, of the NASA Johnson Center in 1971.
One important aspect of his job was to package and ship lunar samples to science labs.
It was during this time that he alleges to have seen NASA photo technicians painting out details of anomalies and UFOs in lunar photos taken during Apollo missions.
He also claims to have been aware of other anomalies between original photos and films he observed firsthand, and what was cataloged by NASA or made available to the public.
The museum has one of the biggest collection of UFO and alien-related material in the world - and was set up to commemorate the July 1947 alleged flying saucer crash that happened in the desert outside the New Mexico town 69 years ago TODAY.