Correspondence and other records on a wide variety of subjects relating to the operation of the Hercules, mostly prior to 1925, and possibly in part a remnant of a former series which may have been similar in structure to the General Records, 1925-1927, described below. Included in addition to letters and telegrams are receipts, bills, an application for land patent, minutes, motor vehicle registration documents, insurance policies, blueprints, leases, mining claim notices, proofs of labor, contracts, memoranda, lists, notes, reports, inventories, tax returns, lists of stockholders, notices of meetings, legal briefs, lode claim notices, lists of men employed, affidavits, and other records.