The Geography and Geology of Alaska, a Summary of Existing Knowledge. With a Section on Climate by Cleveland Abbe, Jr., and a Topographic Map and Description Thereof by R.U. Goode
Notes on page 42 that the Athapaskan people used fire for felling trees
Citation:
Brooks, Alfred Hulse. 1906. The Geography and Geology of Alaska, a Summary of Existing Knowledge. With a Section on Climate by Cleveland Abbe, Jr., and a Topographic Map and Description Thereof by R.U. Goode. 45. USDI Geological Survey. Washington, DC.