If you like this, you may want to also take a look at Retrosheet [1]. They've taken amazing effort to get pitch-by-pitch data for baseball games since professional baseball became a thing in the 19th century. I don't know a ton about RetroSheet admittedly, but I do know they have great coverage and are willing to pay money to get paper documents from people about games they haven't yet entered into their database.

[1] https://www.retrosheet.org/