H/T Trent Fraser
Edison and Westinghouse
In the late nineteenth century, Thomas Edison and George Westinghouse battled for control of the new electricity market. Edison saw a golden opportunity and seized upon it — and in the process conducted (pun intended) what I have heard referred to as the first guerilla advertising.
Read more about it here:
https://www.smithsonianmag.com/history/edison-vs-westinghouse-a-shocking-rivalry-102146036/
The Prairie Fiddler 