FM,Being the inquisitive person that I am I did some 'looking' at the stagger-wing. Seems the D-17S was the most produced.model; 67 civilian and 412 for the military. A total of 785 (all models) were built.
This provision was enacted by the 64th Congress in 1916 (Aug. 29, 1916, ch. 418), and remains in force today, so it would have formed the legal basis for any aircraft requisitions during the Second World War.In time of war, the President, through the Secretary of Defense, may take possession and assume control of all or part of any system of transportation to transport troops, war material, and equipment, or for other purposes related to the emergency. So far as necessary, he may use the system to the exclusion of other traffic.