The Aircraft Warning Volunteer. Mitchel Field, New York. I Fighter Command for the Ground Observers and Information and Filter Center Workers of the Aircraft Warning Service of the Command, June 1943, Volume: Gilbert E5. Robert L. Gilbert First Issues collection, Gilbert. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/525077 Accessed March 13, 2025.