William John Day was 29 when he vanished from the interior of Alaska. He was last seen on September 15, 1975, in Fairbanks at the Fairbanks Rendevous Club. At that time he was about 5 feet 11 inches tall, 150 to 165 pounds, with brown hair and green eyes, and reportedly wearing a black mohair sweater and blue jeans.

He has been known by several aliases, including Kenneth Beeler, Bill Day and Billy Day. The disappearance was reported to the Alaska State Troopers the day after he was last seen. The case was entered into the National Missing and Unidentified Persons System on December 21, 2017, and the Alaska State Troopers in Anchorage are the investigating agency. William’s sister provided DNA to the FBI Laboratory to help with future identification if remains are located.

Few concrete leads have been made public and the circumstances of his vanishing remain vague. If anyone saw William in Fairbanks around September 15, 1975, or recalls seeing the clothing described, please share what is known.