Project 10073 Record Card and Air Intelligence Information Report — Holmen, Wisconsin, 21 April 1952

This document comprises a series of reports regarding an unidentified aerial phenomenon observed on April 21, 1952, near Holmen and Galesville, Wisconsin. The primary witness, a female county nurse, was driving north on Highway 53 during a rainstorm when she observed an object in the sky. She reported that the object appeared to be rotating and was traveling in a straight, southerly direction, though she also noted a trajectory of north by northeast. The witness described the object as having flames emanating from both ends and reported hearing a distinct 'whooshing' sound that was audible over the sound of her vehicle's windshield wipers. She estimated the sound occurred at one-second intervals. The witness explicitly stated that she was unable to provide a complete description of the object because she did not have a clear view. Official military evaluation of the incident, conducted by the 31st Air Division at Fort Snelling, Minnesota, and forwarded to the 72nd Air Base Squadron, concluded that there was insufficient data to evaluate the sighting. Internal comments on the record card suggest the possibility that the observed phenomenon was merely a light blurred by the rain on the witness's windshield. No physical evidence was recovered, and no radar contact was reported. The documentation includes an Air Intelligence Information Report (AF Form 112) and a Project 10073 Record Card, both of which emphasize the lack of sufficient information to reach a definitive conclusion regarding the nature of the object.