Donald A. Hall Estate Collection
Charles A. Lindbergh Letter Urging Completion of Aircraft Designs - Page 3 (1935)

Page 3 of the October 14, 1935 letter where Lindbergh expresses regret at being unable to travel to California and urges Hall to persevere with his proprietary tandem-wing designs: "I hope that you will find some way of completing your present designs. We are far behind in our small planes - several years behind the transport types." Lindbergh inquires whether Hall has presented the project to Donald Douglas or other commercial builders, demonstrating his continued commitment to Hall's private aerospace development.