It is a great and expansive set during an era where most all ball players were characters. Though not obscure, i would submit Billy Sunday is as interesting as any player ever to play the game. After growing up in an orphanage, he carouser with the best of them, when he converted to Christianity at the height of his career and left the game to work in service. He found a knack for preaching and became the most significant evangelist of the early 20th century...I'd say the most significant evanagelist of all time behind Billy Graham and ...well....Jesus. He was the key and driving force behind prohibition and had prohibition "taken" would be considered one of the more significant people in American history. His ministered to millions in traveling revivals in days where there was at best crude amplification. His ministry was never tainted by allegations of wrongdoing, through some people thought he made too much money.
Here's an old clip of him preaching. :
http://www.youtube.com/watch?v=2QgQuc_1pyY
I wanted to be involved in Old Judge collecting though I only have a couple and I recently decided that a Billy Sunday run was the way I was going to go. Have one down...but they come up quite a bit and are not overly expensive considering.