John William Gates, 33, vanished from Longmont, Colorado after leaving home on April 23, 1916. Married in 1903 and father of three, he had worked as a teamster hauling supplies to mountain mines, a job that family members later cited when speculating he might have suffered an accident on a mountain road.

His wife, left with young children, described him in a 1917 application for Mother’s Compensation as a good provider who left for no reason known to her and expressed fear he had met with an accident. Over the decades the absence of a body or paper trail produced competing theories: accidental death while working in rugged mining country, murder tied to a purported dispute with a brother-in-law, or voluntary abandonment or enlistment under another name. None of these theories is supported by conclusive evidence.

Does anyone have family knowledge, local records, or leads about teamsters or mining travel around Longmont in 1916 that could shed light on his disappearance?