Ronald Tammen Jr. was a college student at the University of Miami in Oxford, Ohio when he went missing on April, 19, 1953. His disappearance is bizarre in that various items such as his clothes, keys to his cars, wallet, identification, watch, and high school class ring were found in his dormitory room. Tammen’s own vehicle was also left behind in the school parking lot. There were reports of a woman encountering a man similar in appearance and clothing hours after he was last seen.
Did Tammen have a nervous breakdown and leave on his own accord? The night he went missing he supposedly heard something outside of his dorm room that bothered him. He went outside the room to investigate and that was the last he was seen.
A book has been written about his vanishing and there is also a blog site about his case. https://ronaldtammen.com/