Blackburn Men's Fastball League
Orleans Amateur Fastball Association
Pioneer 3Pitch League
Ontario Provincial Women's Softball Association
Softball Ontario
Softball Canada
Canadian Association for the Advancement of Women and Sport and Physical Activity
SIRC - the world's leading bibliographic database producer of sport, fitness, and sports medicine information
Toronto Blue Jays
Eastern Ontario Umpires Association article on the infield fly rule (pdf format)
Online Hitting Academy
Tips to improve Outfield play
Blackburn Community Association
City of Ottawa
Ottawa Start