Stations References Cornett, Lloyd H. and Johnson, Mildred W., A Handbook of Aerospace Defense Organization 1946 - 1980, Office of History, Aerospace Defense Center, Peterson AFB, CO (1980) Winkler, David F. & Webster, Julie L., Searching the Skies, The Legacy of the United States Cold War Defense Radar Program, US Army Construction Engineering Research Laboratories, Champaign, IL (1997). Information for Lewistown AFS, MT Installations of the United States Air Force in Montana Semi-Automatic Ground Environment sites Aerospace Defense Command military installations Buildings and structures in Fergus County, Montana 1958 establishments in Montana 1971 disestablishments in Montana Military installations established in 1958 Military installations closed in 1971