This collection covers the day-to-day management of the Patterson Ranch Company and any transactions the ranch had with other persons and/or corporations. Materials include correspondence to and from the Hartveld brothers, the dissolution papers for the Patterson Ranch Company, newspaper clippings, cancelled checks, time books and timesheet forms, harvest record cards, inventories, tax rate booklets, poll tax and wage garnishment sheets, invoices and receipts, maps, titles and deeds, photographs of life on the ranch, monographs and catalogs, and ledgers.