Donald Robert Dumas was 27 when he left his Rosemead, California, home on July 14, 1971, around 6:00 PM and never returned. He is described as 5 feet 10 inches, about 170 pounds, with brown hair and brown eyes. Witnesses last saw him wearing a short blue shirt, blue pants, and brown boots.

Very few details about his movements that evening are known and there is no firm indication of where he might have been headed. Investigators report no clear leads over the decades, and the case remains open; agencies including NamUs have been involved in efforts to locate him. The disappearance is still unsolved.

If anyone knew Donald, saw him in Rosemead on July 14, 1971, or has information about his whereabouts, please contact the appropriate authorities.