Abstract The John Mason Boutwell papers (1905) consist of galleys and proofs for the United States Geological Survey Professional Paper #38, titled Geology of the Bingham Mining District, Utah, by John Mason Boutwell (b. 1874). The report includes "an introductory statement on the general geology of the region by S. F. Emmons, a chapter on the areal and structural geology of the Bingham district by Arthur Keith, and a detailed discussion of the economic geology by...