With the help of AI researchers are finding a lot of obscure stuff in old newspapers. Millions of those are now digitized and searchable.
One of the most interesting periods was between the Wright brothers flight (1903) and the beginning of World War I.
There are thousands of newspaper articles from all over the US from folks claiming they saw “airplanes” flying at night during that period.
While airplanes did exist it would have been insanely dangerous to fly them at night—and very few if any were actually in the air.
Have you ever seen the book
Wonders in the Sky: Unexplained Aerial Objects from Antiquity to Modern Times
by Chris Aubeck and Jacques Vallee.
Just reports what contemporaries said or wrote.
Fascinating items.