Well this might help you.
OBR -
http://www.mlb.com/NASApp/mlb/mlb/ba...s_foreward.jsp
NCAA -
http://www.ncaa.org/library/rules/20...ball_rules.pdf
FED - can't help you here. I scanned my 2006 rule book and case book into PDF files for my own use. The FED (just as LL) will not post their rules on-line. Personally, I think the FED should go the route of the NCAA and just publish a PDF for everyone.