The XB-24P-CO was a B-24D (serial number 42-40344) modified by Sperry
Gyroscope Co. in July of 1945 for airborne fire control system
research. Only one such modification was carried out.
Famous Bombers of the Second World War, William Green,
Liberator: America's Global Bomber, Alwyn T. Lloyd,
Pictorial Histories Publishing Co, Inc, 1993.
General Dynamics Aircraft and Their Predecesssors, John Wegg,
Naval Institute Press, 1990.