Richard Dolan on his book "The Cover-Up Exposed, 1973-1991 (UFOs and the National Security State, Vol. 2)"

Richard Dolan - The Cover-Up Exposed, 1973-1991 (UFOs and the National Security State, Vol. 2) - Published in 2009.

UFOs and the National Security State: An Unclassified History, Volume 1: 1941-1973 - Published in 2000.