Thalis Tucker Cook
Agency patch
Deputy Sheriff

Thalis Tucker Cook

Felonious
End of Watch July 21, 1918
Age 60
Tour of Duty 24 yrs
The Vigil Panel 34 ›
Gender Male

Incident

Fine Gilliland was working for a large cattle outfit and got into an argument with a small rancher named Henry Harrison Powe over an unbranded steer. Powe fired his pistol to scare the steer and prevent Gilliland from roping it. Gilliland thought Powe was shooting at him so he shot and wounded Powe. Both men opened fire and Powe was killed. Three days later Deputy Cook and Texas Ranger Jim Putman caught up with Gilliland in the Glass Mountains. Gilliland opened fire with his first shot hitting Cook in the kneecap. Ranger Putman shot Gilliland’s horse as he fled causing him to take cover behind the dead horse. A gun battle ensued until Putman was able to shoot Gilliland in the head and kill him.

Cook’s kneecap was shattered and leg became stiff and straight. He refused to allow doctors to amputate, and instead had his leg broken and bend slightly so he could ride a horse and continue his law enforcement career. Unfortunately he could no longer stand the pain and he died during amputation surgery on July 21, 1918. He was buried in the Nesbitt Cemetery.

Cook was only sixteen years old when he enlisted in the Frontier Battalion of the Texas Rangers under Captain Neal Coldwell’s Company F on February 28, 1874 and served until August 31, 1874. He was one of the youngest men to ever serve in the Frontier Battalion. On September 16, 1876 he reenlisted in Company F and served until March 30, 1879. On April 25, 1889 he joined Company D under the command of Captain Frank Jones at Uvalde and served until November 30, 1889. Then Cook became a deputy sheriff in Brewster County for Sheriff James Gillett. Cook returned to Company D under Captain John R. Hughes at Ysleta on May 24, 1894 and served until November 30th. He reenlisted on March 10, 1896 and served until November 30, 1898 when he was discharged as a First Sergeant. During his breaks in ranger service, Cook also served as a railroad detective, cattle inspector, special ranger and El Paso County deputy sheriff.

In Our Keeping

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August 2, 2026
Last updated
September 9, 2026

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Tributes

24 years. You could have gone home.
Deputy Sheriff Cook gave the Brewster County Sheriff's Office 24 years. Still answering calls at the end.
Thank you for your service to the Alpine community. Gone but never to be forgotten.
Rest easy, Deputy Sheriff Cook.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Type Sheriff's Office
Location Alpine, Brewster County, TX
Platform Identity bcso.brewster.tx.us.gov.nw

Service Record

End of Watch July 21, 1918
Tour of Duty 24 yrs
Age 60
Gender Male

Incident Details

Cause Felonious
Cause Detail Gunfire
Weapon Handgun

The Sacrifice · Felonious

Thalis is one of 15,743 officers killed feloniously in the United States, 57.1% of the 27,551 remembered there.

33,917 officers are remembered on this memorial. Each number below is one of them.

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Compare against
I

Time

In 1918, 165 officers in the United States were killed feloniously, the 19th heaviest of 213 years on record. The heaviest was 1921, with 248.

Every year on record · United States
II

Who

Thalis was 60. Of the 14,220 killed feloniously in the United States whose age is recorded, half were between 31 and 47; the middle age was 38. Thalis had served 24 years; the middle length of service was 6 years.

Age at death
Where he stood among them
Age by years of service
III

When

July holds 9.3% of these deaths in the United States; December holds the most, 9.4%. Sundays: 15.2%.

By month
By day of the week
IV

How

Felonious deaths account for 57.1% of all 27,551 deaths in the United States, the most common cause. The weapon recorded was handgun, in 23.4% of these deaths.

Every cause
Weapons recorded

Deputy Sheriff Thalis Tucker Cook

Brewster County Sheriff's Office · End of Watch July 21, 1918

Where the Name Is Cut

National Law Enforcement Officers Memorial · Panel 23-E

Others Who Wore This Badge

0 officers from Brewster County Sheriff's Office are honored on badge.nw.

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