North American Model 72

Courtesy Andre and Diane Krivitsky.

Model 72 competed with the Beech T-34 Mentor for the military's post T-28 trainer

North American NA-145 Prototype

Courtesy Andre and Diane Krivitsky

Early NAvion Prototype

Smithsonian, Courtesy Scott Sepper

This is the prototype with flush windows, wood prop, and FLAT SKINNED rudder. Notice that the rudder is also full length instead of faired at the top.