The collection contains records of the Hutchinson Lumber Company, Hutchinson Company of California, Feather River Railroad, National Wood Treating Corporation, and Feather River Pine Mills Incorporated; including correspondence, field notes, journals, minutes, Bylaws, reports, contracts, proposals, agreements, ledgers, financial statements, sales, estimates, invoices, appraisals, taxes, affidavits, surveys, blueprints, plat maps, employee applications, job titles and pay scales, equipment, safety and procedure manuals, inventories, and property values. The records cover mill and logging operations and production, as well as forest management, including logging and lumber studies and reports. Some records include materials related to Inman-Poulsen Timber Company, The Western Pacific Railroad Company, Feather Falls Store, Feather River Supply Company, Feather Falls Electric Corporation, California Door Company, Clover Valley Lumber Company, Hogan Lumber Company, Koppers Company, Reconstruction Finance Corporation, and Standardshares Inc. Ltd. The records also include the papers of Chief Engineer Frank Lisbon, and General Manager Carl S. Walker. There are a large number of maps, including topographic maps, that show logged areas, railroad right-of-ways, company ownerships, as well as blueprints showing building and machinery plans.