Donald Stanley Simpson, a 39-year-old White/Caucasian male, died on October 31, 1945, after riding into the rough country of the Sierra Madre mountains with fellow Wyoming Game and Fish warden Bill Lakanen to investigate reports of illegal beaver hunting near Nugget Gulch, west and southwest of Rawlins, Wyoming. Simpson had built a reputation as a respected game warden based in Saratoga, and that Halloween trip appears to have been one more routine enforcement check into a remote trapper’s
camp. Instead, the two wardens vanished into the backcountry and did not come back. When concern mounted and others went looking for them, they found a grim scene: Simpson and Lakanen had been shot to death near the suspect’s cabin, and the cabin itself had been burned.
The man whose name rose immediately out of the ashes of the case was John, or Johann, Malten, a trapper and miner who had been living in that isolated area. Contemporary accounts tied him to the wardens’ trip because they were believed to have gone there specifically to check his trapping activity. Older newspaper-based reports say Malten had been investigated by the wardens before, had been heavily fined, and had even served jail time years earlier, leaving behind a deep bitterness toward them. Those same accounts say he was known to have threatened the men, giving the case the feel of an ambush rather than a chance confrontation. Later memorial accounts by Wyoming game wardens went further, identifying Malten outright as the killer.
As officers closed in on the area, the case took on an eerie second layer. The cabin had burned to the ground, and investigators recovered weapons, money, other personal items, and bone fragments from the ashes. At the time, law enforcement launched an intense hunt because it was not yet certain whether Malten had escaped into the mountains or died in the fire he apparently set. That uncertainty meant there was no arrest in the usual sense, no public filing of charges that led to a courtroom reckoning, and no trial or conviction. The official line preserved in later law-enforcement memorial sources is that the suspect died in the cabin fire before he could be taken into custody, while some later retellings have lingered on the mystery of whether he truly perished there. Either way, the practical outcome was the same: the man suspected of killing Simpson was never brought before a court.
What remains is the shape of a frontier crime that ended almost as suddenly as it began: two wardens riding out to enforce game laws, a remote trapper with a history of resentment, gunfire in the mountains, and a fire that seemed to erase as much as it revealed. Simpson was later buried in Saratoga, and over the decades Wyoming law-enforcement and game warden memorials have continued to remember him not as a man who simply disappeared into an old unsolved story, but as an officer killed in the line of duty in a case that pointed strongly to one suspect, yet never reached the clean ending of an arrest, prosecution, and verdict.
