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Incident
Officer Mosman was killed in a motorcycle accident while attempting to locate a doctor to attend to two drowning victims on the Clearwater River. He was attempting to pass a car on Main Street when his motorcycle wheels struck streetcar tracks, causing him to be thrown from the bike. Officer Mosman was taken to St. Joseph's Hospital where he died two days later. Officer Mosman had been with the agency for only three months.
In Our Keeping
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- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Police Officer Mosman served with the Lewiston Police Department.
Thank you for your service to the Lewiston community. Gone but never to be forgotten.
Rest easy, Police Officer Mosman.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
The Sacrifice · Accident
Lewiston Police Department has lost 5 officers; 1 of them lost to accidents.
Harold is one of 21 officers lost to accidents in ID, 29.2% of the 72 remembered there.
Harold is one of 8,275 officers lost to accidents in the United States, 30% of the 27,551 remembered there.
Harold is one of 10,100 officers lost to accidents worldwide, 29.8% of the 33,917 remembered here.
33,917 officers are remembered on this memorial. Each number below is one of them.
Time
In 1921, 1 officer in ID was lost to accidents, the 3rd heaviest of 19 years on record. The heaviest was 1968, with 2.
In 1921, 68 officers in the United States were lost to accidents, the 54th heaviest of 174 years on record. The heaviest was 1929, with 118.
In 1921, 105 officers worldwide were lost to accidents, the 15th heaviest of 200 years on record. The heaviest was 1930, with 131.
Who
Harold was 21. Of the 19 lost to accidents in ID whose age is recorded, half were between 35 and 58; the middle age was 49. Harold had served 0.2 years; the middle length of service was 5 years.
Harold was 21. Of the 7,718 lost to accidents in the United States whose age is recorded, half were between 29 and 46; the middle age was 36. Harold had served 0.2 years; the middle length of service was 6 years.
Harold was 21. Of the 9,451 lost to accidents worldwide whose age is recorded, half were between 29 and 45; the middle age was 36. Harold had served 0.2 years; the middle length of service was 6 years.
When
August holds 14.3% of these deaths in ID; May holds the most, 23.8%. Tuesdays: 9.5%.
August holds 9.5% of these deaths in the United States, more than any other month. Tuesdays: 14.1%.
August holds 9.3% of these deaths worldwide, more than any other month. Tuesdays: 14%.
How
Accident deaths account for 20% of all 5 deaths at Lewiston Police Department, the 2nd most common cause.
Accident deaths account for 29.2% of all 72 deaths in ID, the 2nd most common cause.
Accident deaths account for 30% of all 27,551 deaths in the United States, the 2nd most common cause.
Accident deaths account for 29.8% of all 33,917 deaths worldwide, the 2nd most common cause.
His people
Lewiston Police Department has 5 officers remembered here, Harold among them.
Where the Name Is Cut
National Law Enforcement Officers Memorial · Panel 35-E
What is kept
Photographs, film, sound and papers — what survived a life.
Others Who Wore This Badge
4 officers from Lewiston Police Department are honored on badge.nw.
