Stephen J. Pyne Year of the Fires © 2001
page 212 and 213:

“Thus began a tedious, often futile accounting of those injured and killed, an exercise that exposed the ramshackle process by which the men had been hired and shipped to the firelines. . . .
“ . . . In most instances the deceased left no identifying papers. Rumors, reported friendships, fragments of letters, telegrams thrust into pockets all provided clues. Newspapers across the nation printed the list of casualties, as the dead had recorded their names. Queries rushed in; counterqueries poured out. From Upland, Pennsylvania, came a letter from James Denton, who had read in the Baltimore paper the register of names, among them the names Joe Denden and Jim Denden, who 'I Think our sons the last we Heard from them was the sixteen of August they were Then at Spokane Wash.'”

- Letter from James Denton to Thomas Butler, 31 October 1910,
National Archives at College Park, RG 95, Records of the Forest Service,
Division of Fire Control, General Correspondence – Claims.