Pesäpallo Helps Define Us
publiscan.fi
History and philosophy of the sport.
Wikipedia: Finnish Baseball
en.wikipedia.org
Brief article describing the sport and its history.
Pesäpallo
pesis.fi
Includes a history of the game, plus the official rules and vocabulary.
Introduction to Pesapallo
nic.funet.fi
Features rules, diagrams, history, comparison to baseball, and teams in Finland.