Would anyone have information on the armed advanced military training version of the Travel Air Type R "Mystery Ship" designed no later than the fall of 1931 by Herbert M. “Herb” Rawdon with the help of his assistant, Walter E. Burnham? That machine might have known as the Rawdon-Burnham RF.
Apologies for the typo in the title, i.e. burnham rather than Burnham.
Apologies for the typo in the title, i.e. burnham rather than Burnham.