Harley Harp I thought you’d find this video from Dewey Davenport interesting…
This Travel Air 6000 flew for Johnson Flying Service. If memory serves me correct, your dad was a smoke jumper for them.
Harley, I remember you posting this a few years back.
Also, Mid America Flying Museum has a Trimotor that flew with Johnson Flying Service too. Erik Johnston has a video on his YT channel about this Trimotor’s history. Jake Driggers can add more details too.