Series II. Business Endeavors, 1926-1969.

• Subseries 1. Roscoe Turner Flying Service, 1926-1930.
• Subseries 2. Curlee Clothing Company, 1926-1969.
• Subseries 3. Nevada Airlines, 1929-1930.
• Subseries 4. Salsbury Corporation, 1931-1946.
• Subseries 5. Porterfield Aircraft Corporation, 1937-1940.
• Subseries 6. Roscoe Turner Aeronautical Corporation, 1939-1969.
• Subseries 7. Air Minded-A Roscoe Turner Air Race Game, 1940.