Ronald T. Waldo is a baseball historian, author, and member of the Society for American Baseball Research (SABR). He has written several books on baseball history, including The 1902 Pittsburgh Pirates: Treachery and Triumph (2015), Honus Wagner and His Pittsburgh Pirates: Scenes from a Golden Era (2015) and Characters from the Diamond: Wild Events, Crazy Antics, and Unique Tales from Early Baseball (Rowman & Littlefield, 2016).