During June 1952, former Gleimershausen mayor Oskar Linke was travelling near Hasselbach with his 11-year-old daughter Gabriella when a tyre problem forced them to stop.

This case matters because it is a documented government event whose object identity remains unresolved.
Documented
During June 1952, former Gleimershausen mayor Oskar Linke was travelling near Hasselbach with his 11-year-old daughter Gabriella when a tyre problem forced them to stop.
Debated
The identity of the object
Debated
The adequacy of the conventional explanation
Unverified
Extraterrestrial origin
Unverified
Any claim stronger than the record supports
Sources are kept in separate layers: official and contemporary material is documented; secondary UFO literature is treated as debated, not as primary evidence.
Documented source.
Documented source.
Secondary / debated material.