"Trenching the Graham Creek Fire, 1910." Probably from: Notes on Observations in National Forests and Elsewhere During the Summer of 1910, p. 25, by J.E. Kirkwood. Image shows two men digging fire line on a forested hillside.
Haun's Ranger Station on the Lolo National Forest near Haugen, Montana. From: "Notes on Observations in National Forests and Elsewhere During the Summer of 1910" p. 1a, by J. E. Kirkwood, Mss 082.