Posted By:
Dan BrettaI don't think there is a comprehensive site....you just have to do Google searches and hope for the best.
This site has most of the team rosters for minor league teams in Nebraska going back to 1900. IMO it is one of the best minor league baseball sites on the net period. If someone did this for all 50 states that would be a heck of an accomplishment.
http://marian.creighton.edu/~besser/baseball/second.html