Snow was a Wyoming peace officer best known for his work on the Tom Horn murder trial of 1902. After serving with a Wyoming artillery until in the Spanish American War in 1898 in the Philippines, he became deputy sheriff of Laramie County. Snow and Charles Ohnhaus were concealed in an adjoining room listening while Horn made his controversial confession to Deputy U.S. Marshal Joe LeFors in 1902, making him a witness during Horn's trial as well as Horn's guard.
From the description of Papers, 1898-1953. (University of Wyoming, American Heritage Center). WorldCat record id: 46542438