History by Contract
 History by Contract published in 1978 is a book written by early aviation researchers Major William J. O'Dwyer U.S. Air Force Reserve (ret.) and Stella Randolph about aviation pioneer Gustave Whitehead. The book containing primary source documents focused on an agreement between Smithsonian and the estate of Orville Wright that stipulates recognition of the Wrights as first to fly in order to retain the Wright Flyer.