A teacher of mine once showed me a fuzzy (are there any other kind?) photo of a UFO hovering over his cornfield in Iowa in broad daylight, circa 1958.

He got several pictures published in the local newspaper. A day or two later, two guys showed up in a black Cadillac claiming they were from the Air Force. They told his mom they needed to study the negatives and asked if they could borrow them. The pictures and negatives were never seen again. (He had had one left at school).

When he later called the number on the card they gave his mom - it was a wrong number.

I can answer no questions as this was 25 years ago and am not in contact with my teacher.