The Baseball Hall of Fame had a secret inductee. In 1988, a surreptitious addition to the Baseball Hall of Fame was made without anyone knowing. A bar owner visiting the hall slipped a photo of his father in a baseball cap into one of the glass cases. This photo remained in the hall for over 6 years before being discovered.
100 Mind-Blowing Slipped Facts
Neil Armstrong’s astronaut application arrived past the deadline. One of his friends just slipped the tardy form in with the others.