Not Stinson but related
The Howard DGA series has been my specialty. I know that three new DGA-15P were contracted by Free French and were completed about the time of Pearl Harbor (12/41). These seem to be serials 550,551, and 552. (The prototype DGA-15 was 500)
I know photos of at least one appears in a Howard advertisement of the day. They appear to be adapted for ambulance duty, with a large R/H door.
Is there an archive or other resource to discover usage, disposition, etc. of these Howards?
Thanks!