May 29, 2010: Roy Halladay Throws a Perfect Game #shorts
Inside Roy Halladay's struggle with pain, addiction - ESPN
Roy Halladay - Wikipedia
White Sox pitcher Phil Humber throws perfect game
Phillies to retire Halladay's 34 on perfect game anniversary
MLB Nears 10 Years Without a Perfect Game - The New York Times
Phillies to Retire No. 34 in Honor of Late RHP Roy Halladay
Gallery: Former MLB star Roy Halladay dead in plane crash in Pasco
34 Numbers to Remember: Roy Halladay's incredible career