Recently, Amateur historian John Greenewald posted more than 100,000 pages of documents on the US Air Force’s internal UFO investigations to the internet.
He has spent nearly two decades requesting declassified information from the US government regarding UFOs.
Named Project Blue Book and headquartered at Wright-Patterson Air Force Base in Ohio, the programme was reportedly comprising only a handful of staff. Nonetheless the group investigated 12,618 UFO sightings in a two-decade period.
Formed in the years immediately following World War Two, Project Blue Book was intended to stop the spread of public unease about a growing number of reported UFO sightings, including over such landmarks as the White House and US Capitol.
Project Blue Book was, in part, supposed to dispell some of this panic and to debunk theories that the Russians were colluding with aliens, or that the United States was under attack from yet another foreign foe.
In many recorded cases, these are strange lights in the sky or objects that people could not name. One of the most famous events is “Lubbock Lights” – the lights they saw in the sky in Texas on August 30, 1951.
The researchers found that they were caused by the reflection of light from the city on the breasts of bird plovers when they flew in the flock.
Witnesses were sitting outside in the yard when they saw 20 to 30 lights in the sky. The round reflections were reported to be green-blue and fluorescent.
Another picture entitled “Winter 1951” clearly shows the flying plate.
However, scientists said it was a lenticular cloud of moist condensed air at high altitudes. Another disturbing object was captured by Rex Heflin, a worker on the road in 1965 in Santa Ana, California. The distant subjects in the photo were blurred, but the ufo captured sharply.

US investigators have collected a total of 12,618 UFO observation reports. In addition to the Blue Book, Sign (1947) and Grudge (1949) also archived.
In late 1969, Secretary of the Air Force Robert C. Seamans, Jr. announced that Project Blue Book was coming to an end, as there was no further scientific evidence to prove that UFOs were a matter of national security.
The project officially ceased to exist on Dec. 17, 1969, though some research efforts continued until January of the following year.