Donald A. Hall Estate Collection
Charles A. Lindbergh Letter from Hotel Marion - Page 3 (1927)

Page 3 of the October 2, 1927 letter from Charles A. Lindbergh to Donald A. Hall Sr. Lindbergh concludes his engineering analysis of the landing gear throttle interlock with an emergency switch bypass, asks for Hall's direct feedback on the design, outlines routing instructions for sending mail to New York via the B.F. Mahoney Aircraft Company, and signs warmly to his Chief Engineer as the Guggenheim National Tour neared completion.