Donald A. Hall Estate Collection
Wingtip Frame, San Diego, CA (1927)

The aerodynamic wingtip design of the Model NYP was calculated by Donald A. Hall Sr. to ensure maximum lift and stability during the 1927 Paris flight.
Donald A. Hall Estate Collection

The aerodynamic wingtip design of the Model NYP was calculated by Donald A. Hall Sr. to ensure maximum lift and stability during the 1927 Paris flight.