Posted By:
TroyJames on T206 museum they do have the sothern Leaguers
http://www.t206museum.com/page/ch_sllt.html
This should help. I however only have a list of the minor leaguers in a Beckett guide I bought back in 2000 to use as a checklist. So if you wanted to by a Beckett Guide (Not the magazine the big book) it would provide both of your requests because it lists Southern leaguers and the minor leaguers separate from the rest.
Hope this helps ,
Troy