Steven Lee Harbaugh, 35, was last seen at his home near mile 298 of the Parks Highway in Nenana, Alaska, in 1998. Records conflict on the exact date—some list May 11, 1998, while others list October 8, 1998—but his family reports no contact with him after the earlier May date. He is described as a white male, 5 feet 10 inches, 165 pounds, with brown hair and hazel eyes, wearing a watch when last seen.

Harbaugh had lived in several states before moving to Alaska and had obtained a marriage license on March 23, 1998, to wed his fiancée Agatha Keyes; he had also obtained a marriage license on September 22, 1997. He used several known aliases, including Steve Harbaugh, Richard J. Butterworth, and Richard Joseph Butterworth, and had past encounters with Fairbanks law enforcement for DUI. The Alaska State Troopers classify him as an endangered missing person and continue to list the case as unsolved.

Few concrete details about his disappearance have been released, and the conflicting last-contact dates remain an unresolved part of the record. If anyone knew Steven, his movements in Nenana, or has information relevant to his disappearance, please share what is known with the Alaska State Troopers.