Project 10073 Record Card — Roseville, California, 17 August 1955

This document consists of a Project 10073 record card and associated teletype communication regarding an unidentified aerial phenomenon reported on August 17, 1955, in Roseville, California. The witness, identified as Mrs. Vena Preston, a housewife and member of the Ground Observer Corps (GOC), reported observing a single, round, silver object that appeared to be the size of a basketball at arm's length. She described the object as being very bright, noting that it moved straight up before drifting off. The total duration of the observation was approximately ten minutes. The report indicates that no photographs were taken and there was no radar contact. Following an investigation by the Air Defense Command (ADC), it was determined that a weather balloon had been released from Vernallis, California, and was plotted over the Roseville area on the same date. Based on the description of the object, the duration of the sighting, and the witness's observation that the object drifted, the official conclusion reached by the evaluating agency was that the sighting was a balloon.