As reported

Chevron over Mukwanago/Genesee (Between), WI

A witness account on file, unevaluated. Most of the archive rests here, and honestly so.

The report, as filed

Detailed sighting of Boomerang Shaped silent craft in Wisconsin in mid-70's

Held as-reported from National UFO Reporting Center. Witness text is preserved verbatim, including its spelling; nothing is edited beyond formatting.