Collector. Correspondence, tax records, audits, and financial statements (1943–1968) of the Oklahoma Farmers Union and of its subsidiary organizations, the Oklahoma Farmers Union Supply Association (1950–1957) and the Union Mutual Insurance Company (1947–1968); financial statements (1954–1955) of the Oklahoma Farmers Union Service Corporation and the Oklahoma Farmers Union Cooperative (1956–1960); financial reports (1961–1964) of the Mid-Continent Farmers Cooperative; and correspondence and financial reports (1949–1955) of the National Farmers Union.