End of Watch October 9, 1929
Agency Washington State Patrol
County Pierce County
Trooper H. Douglas Cossman died on October 9, 1929 at the age of 28. He died from injuries he received in a collision with an automobile and his motorcycle at 46th & Park Avenue in Tacoma. At the time of his death, Trooper Cossman had served only two months with the Washington State Patrol as a trooper.
Patrolman Cossman was survived by his wife, Ruby Cossman
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