Years ago I found a booklet published by General Electric in 1927. Actually it was published by a GE division "National Lamp Works" via the Nela School of Lighting in Nela Park, Cleveland, Ohio. Established in 1911, Nela Park (named for the National Electric Lamp Association) in Cleveland, Ohio, has through the present day served as both administrative headquarters and research laboratory for the development and sale of General Electric's (GE) lighting products. I did not find any mention of this particular booklet in the forums.
I may have to attach photos in separate postings due to the forum's limits.
Hope you enjoy this information.
Bill
Grand Rapids, MI