Project Sign Progress Report 1948

Summary

DOW-UAP-D097 is a 45-page progress report on Project 'Sign' prepared by Headquarters Air Materiel Command at Wright-Patterson Air Force Base, Ohio, in 1948. The initial report on unidentified flying objects followed a 30 December 1947 Headquarters USAF directive, with project HT-304 activated on 26 January 1948 and technical instruction 2185 published on 11 February 1948. It tabulates all available reports through 1 February 1948 and notes observed characteristics including high rates of climb, hovering, oval, disc, or saucer shapes, and reported sizes ranging from a 26-cent piece to 260 feet in diameter. Representatives also visited General Electric's Dr. Irving Langmuir to discuss the project.