File 1731 — Osceola, Wisconsin, July 29, 1952

File 1731 consists of a collection of 11 photographs documenting a radar observation that occurred on July 29, 1952, in Osceola, Wisconsin. The document provides no narrative report, analysis, or official conclusion regarding the nature of the event. Instead, it serves as a visual record of radar scope data. Each of the 11 photographs displays a circular radar screen with a grid overlay. In each image, a specific, singular mark or blip is highlighted by a hand-drawn circle, suggesting the tracking of an unidentified object or target. The photographs also include a clock and a calendar date indicator, confirming the date of the observation as July 29, 1952. The images appear to be part of a formal file, as indicated by the cover page, but the lack of accompanying text leaves the specific circumstances, the nature of the radar equipment, and the identity of the observers unstated. The document is strictly a visual archive of the radar data captured during the incident.