Officer Raymond J. McMaster

Officer Raymond J. McMaster

Boulder Police Department, Colorado

End of Watch Sunday, November 9, 1958

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Raymond J. McMaster

Officer Raymond McMaster was shot and killed after stopping a taxi cab on State Highway 7 following a robbery in Lyons.

He and his partner had positioned their car on Route 7 in anticipation the vehicle would come to Boulder. They observed the taxi and conducted a traffic stop. As Officer McMaster approached the car one of the men inside opened fire, fatally wounding him.

Two of the suspects were sentenced to life and the third was sentenced to 20 years.

Officer McMaster had served with the Boulder Police Department for four years.


  • Age 30
  • Tour 4 years
  • Badge Not available

Incident Details

  • Cause Gunfire
  • Weapon Gun; Unknown type
  • Offender Two sentenced to life

robbery, traffic stop

Most Recent Reflection

View all 12 Reflections

My Father, Officer Howard L. Grothjan, was Officer McMaster's partner during the incident. Ray was a hero in the true sense of the word. His passing profoundly affected my dad for the rest of his life. He will always be remembered as an embodiment of dedication and service.

Steve Grothjan
Son of Officer McMaster's partner, Officer Howard L. Grothjan

March 23, 2021

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