I was just talking about this with a friend, so I was happy to randomly come across photos of it via shorpy.com. It’s somewhat in the same vein as the Harris 20th Century Railroad Attachment in the sense of My god, I can’t believe this was commonplace one hundred years ago.
Prior to the advent of radio broadcasts, people would actually mass in the streets to stare intently at this really mechanical “baseball game reproducer” that looks like a pinball machine. Updates would be phoned in or delivered via telegram and then be put up on the board to – one assumes – thunderous reaction. Amazing how the standards of what passes for entertainment change over time. I can’t imagine announcing to my wife, “OK, I’m off to stare at the baseball game reproducer. See you in three hours!”