The Financial Records series include Annual Financial Statements, Operating Statements, Combined Records, Stock Certificates, Trial Balances, Accounts, Appraisals and Inventories, Journals, and Tax Records.

The annual financial statements summarize briefly the assets and liabilities of various companies. Operating statements give a detailed accounting of monthly production, and occasionally include annual summaries for the Flambeau Paper Company, 1898-1935 and the Park Falls Manufacturing Company, 1906-1912. Included are manufacturing costs, salaries, production costs, etc. Combined record books contain various types of financial records found together in the same volume, and the trial balances are debit and credit listings, usually by month. The accounts are comprised of ledgers, which list accounts by individual or company; cash accounts and cash books, which are a chronological listing of debits and credits; accounts receivable/payable, and rent account books. Included in the tax records are both personal and corporate returns, 1909-1929, and land tax lists, which record the amount of money paid in property taxes.