Here is the link to a write up on Fred Mann:
http://sabr.org/bioproj/person/3b8d1e5f
I'm working on a bio of Wild Bill Widner now, but its far from complete.
As far as the Goodwin OJ book, its highly recommended if you even the slightest interest in the set. Pictures of nearly every pose issued, short bios about the players, team lists, rarity lists, how they were produced, etc... The list can go on and on. My copy gets used at least once every week if not more.
Steven