Thanks to some amazing research by DDBB customer Ed Summers, 30 new season libraries will be available soon (for free of course)! These comprehensive libraries will cover all of the seasons from 1931 - 1959 and they contain as-played lineups, ballpark factors, transactions, and missing statistics that were not reliably recorded and had to be entered by hand. I am currently reviewing these new seasons and preparing them for release. I expect to start releasing them (by decade) soon.
A big thank you goes out to Ed Summers for creating and sharing these libraries!