Harvey Long, 72 and non-ambulatory because of a broken hip, was last seen in Menlo Park, California on December 31, 1983. His inability to walk unaided makes his disappearance particularly unusual; there were no signs at the scene indicating where he might have gone, and no confirmed sightings after that day.

Investigators describe the case as puzzling given those circumstances, and efforts to locate him have not produced a resolution. No definitive conclusion has been reached about what happened to Harvey, and the case remains unsolved.

If anyone has information about Harvey Long or remembers anything from Menlo Park around December 31, 1983, please contact the local authorities with what you know.