Cowboy Nation: The Song Man: Sagebrush Troubadour: Cahill's "Outside" magazine article about Ian Tyson.
National Geographic Adventure: Lewis and Clark on the Rocks: Cahill reflects on his assignment on the Lolo, a dangerous trail through the Bitterroot Mountains. Includes audio clips and an excerpt from the article.
Outside Online: Forbidden: Article about traveling to the salt mines of Mali.
Outside Online: Out There: Cahill's column in Outside Magazine.