It seems that there are two names for two different engines and constructors: first an unknown manufacturer of a 120 hp, water-cooled engine with six upright inline cylinders. (see previous chapter)

-The second one is builder Raymond Howard of Detroit. In 1917 he made a 12-cylinder 60° V engine that gave 200 hp. There is no known application.

From Appendix 12: It is the Detroit brand that made a new engine as a result of the union of two V-12s, although they do not coincide with those of 200 hp since the total power of the new 24 cylinders is estimated at 1200 hp. It would be a very later project.

“24 cyl. Howard, 1200 hp” (PiP-Flu)

-It does not seem that the cylinders of each V-12 are at 60°, but at a somewhat lower angle. Year 1921.