Potlatch Forests, Inc. --Clearwater Timber Company. --Edward Rutledge Timber Company. --Forests and forestry-Idaho-History-Sources. --Forests and forestry-Montana-History-Sources.
Newspaper clippings, articles, and personal papers relating to Billings' work with the U.S. Forest Service in Idaho and Montana and with Edward Rutledge Timber Co., Clearwater Timber Co., and Potlatch Forests, Inc.