John M. Goodwin / WWI railway artillery camoufleur

Here’s a puzzle: I haven’t been able to ascertain if the John Goodwin who authored a book in 2016 on Railway Guns (see cover above) is the same World War I American artist who developed railway artillery during that war. Of course, it can't be (unless that book was a reprint), but they may be related. The full name of the earlier person was John M. Goodwin. But I know almost nothing beyond that. What I do know comes from searching archival newspapers. Below are two items I’ve recently found— 

ANON, The Washington Times (Washington DC), April 25, 1919, p. 9—

John M. Goodwin, of the artillery division, Ordinance Department, and in charge of the camouflage of railway artillery, will give an illustrated talk on “Camouflage” at the United Service Club of America, Dupont Circle, tonight at 8:15.

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J.M. GOODWIN TO LECTURE. Will Give Course in Art at Research University, in The Washington Post, February 5, 1921, p. 7—

John M. Goodwin, Civil Engineer, has been named professor of art at Research University. The appintment was announced yesterday by President L.W. Rapeer, of the university.

Mr, Goodwin developed the dual complementary system for concealing big railway mounts during the World War, making his studies amid observations from airplanes. He later delivered lectures for the government on “Scientific Color Camouflage.” His studies have been pursued in the United States, Italy and France…

RELATED LINKS    

Dazzle Camouflage: What is it and how did it work? /  Nature, Art, and Camouflage / Art, Women's Rights, and Camouflage /  Embedded Figures, Art, and Camouflage / Art, Gestalt, and Camouflage /  Optical science meets visual art /  Disruption versus dazzle / Chicanery and conspicuousness /  Under the big top at Sims' circus