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August 2, 1924. Washington, D.C. "Coleman's scoreboard invention." The scene behind the screen of the Lifelike Baseball Scoreboard. View full size.
From another photographic site: "George S. Coleman with the newest in baseball score boards. It contains 19,000 feet of wire and has 400 stereopticon slides with an electric light bulb for each slide. Five men are required to operate the great board, including the telegraph operator who receives play-by-play from the field. Mr. Coleman is shown on the extreme right."
'....as the plays are received by telegraph from the scene of the game...'
Was there some poor guy sitting on a morse key at the game tapping out some strange cryptic coded version of the play?
Was it like chess-speak? P-Q4 and all that?
Ten years to build? From this view, what a waste of a life. Plenty of good seats were always available in those days.
Buy a ticket, not to the theater but to see the actual humans. Get some fresh air. It wasn't like this fellow was building these things in every theater in the hinterlands where there was no big league ball.
[Not very likely unless you bought a train ticket as well. This setup was used for the home team's away games. - Dave]
Here are some young technology experts. Fore runners to the dot com guys or Geek Squad.
An article about Mr. Coleman's patented invention appeared in the Nov. 1924 Popular Science.

Mr. C would probably crap his pants.
It looks as if Rube Goldberg wa an inspiring force for this invention.