Fitter2 has control
The Allied LRA-1 Flying Boat Glider was an experimental design that led to two wooden prototypes being produced. (As C2J notes Bu nos. 31503 and 31504). Four more were ordered from the Bristol Aeronautical Corporation. 100 were planned for production but the military never followed up on the order, so the project was cancelled. See daveswarbirds.com for more info.