This week the FBI launched an online document archive called The Vault. The site is an electronic reading room that has over 2,000 documents scanned in so far.
One is a memo dated March 22, 1950 confirming the Roswell UFO incident in 1947
FBI Archive – http://vault.fbi.gov/hottel_guy/Guy%20Hottel%20Part%201%20of%201/view?searchterm=Guy+Hottel
March 22, 1950
GUY HOTTEL, SAC, WASHINGTON
The following information was furnished to SA [redacted] by [redacted].
An investigator for the Air Forces stated that three so-called flying saucers had been recovered in New Mexico. They were described as being circular in shape with raised centers, approximately 50 feet in diameter. Each one was occupied by three bodies of human shape but only 3 feet tall, dressed in metallic cloth of a very fine texture. Each body was bandaged in a manner similar to the blackout suits used by speed flyers and test pilots.
According to Mr. [redacted] informant, the saucers were found in New Mexico due to the fact that the Government has a very high-powered radar set-up in that area and it is believed the radar interferes with the controling mechanism of the saucers.
No further evaluation was attempted by SA [redacted] concerning the above.