North American Aviation
“Conventional design, two place tandem, low wing, all metal, single engine, land plane with retractable landing gear.  Wing structure is conventional, with at two-spar system.  Split flap system is a hydraulically actuated.  The fuselage is chrome-molybdenum tube truss to the rear of the aft cockpit, with a wood or semi-monocoque structure after that.  Later aircraft have wood stabilizers.”