UFO's in Sweden

This collection of documents details the investigation of UFO sightings in Sweden between 1957 and 1959 by the United States Air Force, specifically the Air Technical Intelligence Center (ATIC) and the Air Attache in Stockholm. The primary incident involves a report from December 1958 near Goteborg, where two men claimed to have fought with three or four beings who landed in a flying saucer. Following an investigation by the Air Technical Intelligence (ATI) representative, the report was dismissed as a deliberate hoax, and it was determined that the witnesses were not suffering from hallucinations. The documents also discuss a separate 1957 incident on the island of Gotland involving 'angel's hair.' Swedish Air Force intelligence experts, in collaboration with the University of Uppsala, analyzed the substance and identified it as slightly spun natural silk subjected to mechanical stress. The USAF later suggested this was likely industrial waste from a nearby silk processing plant, potentially blown by unusual wind patterns. The correspondence highlights the close cooperation between the USAF and Swedish Air Force intelligence, noting that the Swedish military often viewed many UFO reports as Soviet attempts to test Swedish radar and defensive installations. The documents include internal routing sheets, message forms, and formal letters between the European Detachment of ATIC and the Commander at Wright-Patterson Air Force Base, reflecting the administrative process of intelligence reporting and the eventual declassification of these files in 1968.