Apparently in Jackson Hole WY., there was a infamous event that happened in the last 40 years or so, which many locals actually witnessed.
A wealthy guy (as I understand it, REALLY rich, at least in those days) was sleeping with another man’s wife, and the man somehow found out about it.
There was a challenge issued, and the two men squared off with 6-shooters in the main square of town, were the elk-horn arch is. There were many locals who were on hand to watch, and someone was killed. (problem is, I don’t remember for sure if the rich playboy got it or if it was the cuckolded husband who bit the dust)
Because of the laws in Wyoming at the time, the man who survived was never charged, as the local prosecutor felt it was a self-defense shooting.
The story was told to me by a friend who lived in Jackson for several years, (not during the time of the incident though, many years later) who said it is common knowledge among old-timers up there.
ETA—It seems to me now that the rich philanderer killed his lover’s husband, because I remember that my friend talked like the rich ol’ bastard is still living and now owns 1/2 of the entire Jackson Valley…