One Douglas O-38C aircraft was ordered by the War Department for the Coast Guard in 1931. This single Douglas O-38C, tail number 32-394, was given the Coast Guard number "CG-9" and was commissioned in December 1931. That Coast Guard number was later changed to "V-108."
The aircraft crashed and was written off in April 1934.
Aircraft History File, U.S. Coast Guard Historian’s Office.
Gordon Swanborough & Peter M. Bowers. United States Navy Aircraft Since 1911 (Annapolis: Naval Institute Press, 1990-third edition), pp. 164-165.
Arthur Pearcy, U.S. Coast Guard Aircraft Since 1916 (Annapolis: Naval Institute Press, 1991), pp. 158-159.