James Henry Clarke was 16 when he vanished from his home in Montague Township, near Smiths Falls, Ontario. He was born May 1, 1959, and was last seen on May 10, 1975. At the time he was living with his mother and had reportedly had a dispute with his girlfriend that day; after that disagreement he was never seen or heard from again.

Described as a white male, 5 feet 8 inches, about 63 kg, medium build, with long brown hair and blue eyes, James had previously lived with his father in Quebec. After he was reported missing there was no indication he contacted his father or other family members. The Ontario Provincial Police list him as an endangered missing person.

Few concrete details are known about what he was wearing or what, if anything, he took with him. Does anyone who knew James or his family in the Smiths Falls area in 1975 have information that could help clarify what happened that May?