This Day in Baseball content comes from many sources:
Baseball-Reference, National Pastime, Astro Daily, Retrosheet, and This Day in Baseball was born from The Baseball Page which had 20 years on This Day in Baseball cool facts and stats. We also have hundreds of Baseball books that we still use as reference points.
Biographies come from The Baseball Page & Baseball Library
All statistics as a reference point come from Retrosheet and Baseball-Reference.
Audio comes from Astro Daily, MLB Classic Games, Baseball Hall of Fame and other sources.
If you have any questions please feel free to contact us. Additionally, if you would like to contribute please reach out to us as well.