UFO observed in Waterloo Iowa 1967

Summary

A civilian reported a yellow object the size of a golf ball, observed for ten minutes. The witness saw it appear near the horizon and disappear behind a building. Although not identified with certainty, a balloon was considered. The report includes details on location, time, and the observer's testimony.

The report mentions no physical evidence and the local airport reported no unusual activity. Despite ruling out other explanations, the case remains unresolved. Weather conditions and the absence of abnormal aerial phenomena are also included.