Adventure Magazine, July 1948

This document is not a pulp magazine but rather an excerpt from Project Grudge, a U.S. Air Force UFO investigation report. The text presents Dr. Hynek's systematic evaluations of 240 UFO incidents, categorizing them by likelihood of astronomical explanation. Incident #138 from Columbus, Ohio (July 8, 1948) exemplifies the classification method: a reported bobbing object is dismissed as an aircraft with image distortion from air currents. The report organizes sightings into categories including high-probability astronomical phenomena, balloons or aircraft, rockets/flares/falling bodies, miscellaneous explanations (reflections, auroras, birds), and cases lacking sufficient evidence for explanation. Numerous incident numbers are listed under each classification, representing the Air Force's attempt to rationalize UFO reports through conventional explanations.