- Beech C-45 (F-2)
Beech C-45 (F-2) Front Side Perspective Bottom Top - Lockheed C60-A
Lockheed C60-A Front Side Perspective Bottom Top - Lockheed C-40A
Lockheed C-40A Front Side Perspective Bottom Top - Douglas C-54A
Douglas C-54A Front Side Perspective Bottom Top - Douglas C-47
Douglas C-47 Front Side Perspective Bottom Top - Douglas C-39
Douglas C-39 Front Side Perspective Bottom Top - Curtiss C-46
Curtiss C-46 Front Side Perspective Bottom Top - A drawing and the first page of the specifications of the first patent issued to C. E. Duryea
It can be readily seen that this drawing was not made after the plan of the first vehicle.