The papers of the Craig Mountain Lumber Company are contained in twenty-eight large file boxes; in addition there are twelve shelves of journals and ledgers. Material relating to subsidiary companies, the Craig Mountain Railway, Winchester Townsite Company and Oxbow Ranch Company, are also found in this group.

Among the items included in this collection are blueprints of buildings and machinery, insurance claims for injured personnel, monthly and yearly financial statements, contracts, notices of stockholders' meetings, articles of incorporation, and railway rules and regulations. There are also two files detailing Craig Mountain Lumber Company's application for a $250,000 loan from the Reconstruction Finance Corporation in 1934. Another interesting portion of this group is the ten years of correspondence between Northwestern Lumber Company and Craig Mountain Lumber Company, the former trying to sell its Nez Perce and Lewis County timber holdings to the latter.