Ac dc first savage standard tale war

For example, I am currently reading the new book by Tom McNichol "AC/DC - The Savage Tale of the First Standards War". On p. 38 is reprinted part of Edison's article in North American Review, written in 1878, shortly after his invention ......

AC/DC: The Savage Tale of the First Standards War, by Tom McNichol. When electricity first started becoming common, there were two competing standards in the marketplace: alternating current and direct current. ...