Scope and Contents From the subsubseries: This subsubseries comprises reproductions of works of art on aviation themes by 20th-century artists. It is arranged alphabetically by artist. The bulk of the materials consists of reproductions of paintings by Charles H. Hubbell, published by Thompson Products, an aircraft parts supplier in Cleveland, Ohio, and sponsor of the Thompson Flying Trophy. The materials were published in portfolios, most commonly of 12 prints. The portfolios are arranged chronologically, by date of event pictured,...