FBI files from the Freedom of Information Act. Section 10 of 16. Below the files you can find interesting snippets of the documents by page numbers.
Donald Stewart and George Tyler had observed unconventional type aircraft on 29 March 1952 in the vicinity of Baltimore, Maryland. They reported seeing a disc aircraft on Ritchie Highway by the intersection of Route 301. The UFO was around 200 feet above their automobile and had actually cracked the cars paint as it flew overhead.
The car was then tested for radiation using a geiger counter, but nothing strange was detected.
Drawing of alleged UFO.
If flying saucers do exist, according to this document, they must be coming from either the United States, Russia, or the Republic of Argentina.
The power must be derived from atomic fuel because conventional methods of creating lift would make the craft too heavy to fly. The disk could be raised in by emitting a great quantity of negative ions through its upper surface and causing a decrease in pressure which would result in the pressure underneath the disk forcing it upward.
Chicago, Illinois on March 11, 1952 9:00am.
He was looking out the window that faces south when a flying disc was hovering at about 7,000 feet. It came out of a cloud and then shot off due south at incredible speeds.
The disk seemed to be made of some kind of aluminum and was a bluish tinge. It was around six feet in diameter and there was no sound emitted from the UFO.
September 10th 1951 a radar set picked up a fast moving low flying object. It followed the coast line, but the craft was so fast that the radar couldn't keep tracking it even though it can normally track jets at high speeds. More similar sightings were seen as well days afterwards.
Unidentified object seen at 00552 February 10th by the crew of Navy. First seen as a yellow light, it approached rapidly and was semi-circular in shape. As it approached the plane it suddenly turned around and performed a 180 degree turn before it disappeared at a "terrific speed."
Using the freedom of information act in the U.S. we were able to obtain many documents from different branches of the Government and the military. Some of these declassifed files show interesting facts and research about aliens, flying saucers, and UFOs.