Fairfax County, Virginia: Private pilot sees aluminum-colored disc below his plane

During the day Bertram A. Totten, a clerk at the Library of Congress, was flying his plane at 5,000 feet over Fairfax County, Virginia, when he spotted an aluminum-colored disc about 40 feet in diameter and 10 feet thick flying 1,000 feet below him. He dived toward it, but it sped up into the overcast. It glinted when the sun hit it, and he noticed a vapor trail. Eberhart cites Loren E. Gross, UFOs, a History, January–March 1950. The account follows the entry in George M. Eberhart's chronology UFOs and Intelligence (CUFOS) and the sources cited there; it is not an independent determination by From Beyond Space.