Thank you Zane, Congrats are due you....,
but there were eight Stinson 10-As and 10-Bs of ATC #754 as L-9s impressed into military service from civil owners that were officially designated L-9As. Other O/L- Stinsons were the O-49/L-1, L-1, OY-54, O-54, OY-1, L-5, L-5B, L-9/O-62 and L-12-no single acquisitions among them.
Back to L-11....
I will give you a mainly half-right on this quiz. The SOLE L-11 military liaison aircraft was indeed a Bellanca 31-50, built in 1935. Only seven Bellanca 31-50s were ever built. Six place high wing of 56' wingspan and 28' long. 180 mph, range-920 miles, empty weight 3,150 lbs. My info has it powered by a 600 Hp P&W R-1340 which I know as a Wasp radial, the R-985 of 450 Hp being known as the Wasp Jr.
The Military SerNo was 42-107421. The sole L-11 did assigned military liaison duty in Alaska on the Canadian Oil Pipeline and the ALCAN Highway construction projects in May of 1942, but was struck as un-airworthy in October, 1942. Short duty.
Incidentally, the Approved Type Certificate No. 565 was assigned by the CAA of the Dept. of Commerce and the aircraft's nick-name was the Bellanca Senior Skyrocket. And, the Bellanca 31-50 was very similar to the later-built De Havilland of Canada U-A1 OTTER; some might say almost identical!
Quiz #64 remains open for the other sole L- bird. Please keep trying..