Methods and Costs of Gravel and Placer Mining in AlaskaChester Wells Purington · First published 1905 · Latest edition 2023Open the Tome
Mine Sampling and Valuing; a Discussion of the Methods Used in Sampling and Valuing Ore Deposits, with Especial Reference to the Work of Valuation by the Independent EngineerChester Wells Purington, C. S. Herzig · First published 2018Open the Tome
La Plata folio, ColoradoWhitman Cross, Arthur Coe Spencer, Chester Wells Purington, Geological Survey (U.S.) · First published 1899Open the Tome
Telluride folio, ColoradoChester Wells Purington, Geological Survey (U.S.) · First published 1899Open the Tome
