Project Blue Book Case #91. In October 1947, an unidentified object was observed over Dodgeville, Wisconsin — a small mining community in the rolling hills of Iowa County. As Case #91, this was among the very earliest entries in the Blue Book archive, from the founding months of the Air Force's UFO investigation effort.
Dodgeville sits in the "Driftless Area" of southwestern Wisconsin — a region of deeply carved river valleys that escaped glaciation. The area's rural character and dark skies provided ideal observation conditions, though the community's distance from military installations meant limited air traffic.
October 1947 was just four months after Kenneth Arnold's sighting launched the modern UFO era. The military was still developing the investigation protocols that would eventually become Project Sign, and early cases like Dodgeville helped establish the database that justified a formal program.
The case was classified "Unknown" — one of the founding entries in what would grow into a 12,000-case archive.