I've been a fan of Old Time Radio for many years. Here's a great site to get lost in. There are many old sports broadcasts and shows like Bill Stern, Dizzy Dean and Double Play with Durocher and Day.
Be sure to check out a show called Biographies in Sound. The biographies of Durocher and Connie Mack are awesome. During the Mack show, there is an interview with a player who played with Connie in 1902.
I can't tell you how many hours I've spent listening to these great shows.
http://tennesseebillsotr.com/otr_downloads.htm