Roy Halladay - Wikipedia
Roy Halladay Looks Back on His Phillies Years - Philadelphia Magazine
MLB: Gausman to wear No. 34 in honour of Jays legend Halladay
Philadelphia Phillies: Significance of Roy Halladay's Hall of Fame selection
Roy Halladay – Society for American Baseball Research
Roy Halladay's Number is Retired by Toronto Blue Jays - The New York Times
Braden Halladay Pitches Inning Against Late Father's Team
Wheeler 2-hitter, Harper HR, Phils beat Mets, 8th win in row
Roy Halladay, two time Cy Young winner, dead at 40 after his plane crashed in the Gulf of Mexico – New York Daily News
Philadelphia Phillies retire Roy Halladay's No. 34 jersey in tribute to late ace - ESPN