Summary of orders and letters defining the decision to build O-57, O-58 and O-59 aircraft to be included in the September 1941 Louisiana Manuevers. Also included is a mention of the contract to build the twenty O-58A aircraft to be delivered by November 1941.
The L Birds firmly established themselves during the September 1941 Louisiana Maneuvers and the rest is history. The L-4 went on to destroy more enemy troops, vehicles and material than any other tactical aircraft employed during WW II by the
US.