If not familiar with this iconic aircraft, an interesting read here... https://en.wikipedia.org/wiki/Winnie_Mae
You may especially enjoy the pic of Wiley Post's pressure suit worn as he flew Winnie Mae to an estimated altitude of 50,000 feet... In my pic above take note of the navigator's table and the "card communication system" with which Australian Harold Gatty sent his "note to pilot" messages. The...

Winnie Mae...