William Dubois successfully piloted his tiny Ercoupe late last year from Omaha to Salt Lake City using just the instruments, airspeeds and written instructions provided to pilots of 100 years ago, when airmail routes were being tested by the US Government.  Victory Girl created the graphics for William's adventure flight, (see photo, by Lisa F. Bentson) while William dressed for the open-cockpit flight in leathers and goggles. William's engaging account of his trip was published the Air & Space Magazine 

https://www.airspacemag.com/history-of-flight/omaha-salt-lake-city-without-gps-180973967/

Jerri Bergen