"DuPont" . . . . . . . . "1919" . . . "Du Pont Motors" . . . . . . "Du Pont Motors, Inc." . . . . . "Merged into theIndian Motorcycle Company" . "duPont" . . "Du Pont Motor Co." . . . . . "Du Pont" . . "Du Pont Motors" . . . . . . . . . . . . . . . .