Roll of Honor
Incident
Deputy Sheriff Arthur Osborn was shot and killed along U.S. Highway 30 two miles west of Pine Bluffs while attempting to arrest a man wanted for cashing stolen bonds at a bank in Cheyenne. Deputy Osborn waved the suspect's car down, and as he approached, the man picked up a gun from the seat and shot him. The man was one of the brothers of the leader of the Barker-Kipnis Gang and the son of the infamous Ma Barker. On August 27th, 1927, he shot and killed Patrolman Joseph Marshall of the Wichita Police Department, Kansas. Deputy Osborn had served with the Laramie County Sheriff's Office for over one year. Survivors include his wife and four children. He is buried in Pine Bluffs Cemetery, Pine Bluffs, Laramie County, Wyoming. The Barker-Karpis Gang committed violent crimes throughout the American Midwest in the late 1920s and mid-1930s. Members and associates of the gang were responsible for the murders of more than ten law enforcement officers. Please click here to view all the law enforcement officers killed by the Barker-Karpis Gang.
Survivors
Survivors include his wife and four children.
In Our Keeping
- Permanent identifier
BO-US-WY-A4C25C78- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
You barely got started.
Deputy Sheriff Osborn gave the Laramie County Sheriff's Office 1 year.
Thank you for your service to the Cheyenne community. Gone but never to be forgotten.
Rest easy, Deputy Sheriff Osborn.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Deputy Sheriff Arthur Emil Osborn is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,772 officers honored here.
In WY, 41 of 63 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 65.1% of this state's fallen. That is 65.1 percentage points above the national rate of 0%.
At Laramie County Sheriff's Department, 3 of 5 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 60% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Arthur Emil Osborn's cause is highlighted.
How Arthur Emil Osborn Compares
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Arthur Emil Osborn is highlighted in Aug.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Arthur Emil Osborn was killed by gun.
Incident Location
Others Who Wore This Badge
4 officers from Laramie County Sheriff's Department are honored on badge.nw.
