Science Art: Experimental Electricity Course, 1916.

Scientific illustration of... well, there's a lot going on here. We've got a mythical-looking figure in a loincloth, sort of half-Zeus (his right hand is holding lightning bolts) and half-Hephaestus (his left hand, to our right, is on a large switch) Along the lower right of the image there are insets of various early 20th-century electrical devices. To the left and across the bottom is a block of text advertising a course in electrical science in the form of a book by S. Gernsback (doubtless a relative of the publisher, Hugo Gernsback) and H.W. Secor. It only costs a dollar!
Scientific illustration of... well, there's a lot going on here. We've got a mythical-looking figure in a loincloth, sort of half-Zeus (his right hand is holding lightning bolts) and half-Hephaestus (his left hand, to our right, is on a large switch) Along the lower right of the image there are insets of various early 20th-century electrical devices. To the left and across the bottom is a block of text advertising a course in electrical science in the form of a book by S. Gernsback (doubtless a relative of the publisher, Hugo Gernsback) and H.W. Secor. It only costs a dollar!

This is how you advertise a science book. At least, it was how Hugo Gernsback did in the pages of The Electrical Experimenter in September 1916. Is that figure in the middle Hephaestus or is it Zeus? Either way, by reading this course, you’re bound to get that shirtless, lightning-wielding, machine-operating guy’s power. Just imagine! The book is “not only useful, but absolutely necessary to everybody interested in electricity.” And in 1916, who wasn’t?