In 1939 Lou Gehrig claimed that young players then had it easy compared to when he came up - NBC Sports
Revisiting death of Yankees legend Lou Gehrig 80 years later
Gehrig, Lou Baseball Hall of Fame
Lou Gehrig – Society for American Baseball Research
July 4, 1939: Lou Gehrig says farewell to baseball with 'Luckiest Man' speech at Yankee Stadium – Society for American Baseball Research
Meet the kid who believes he's the reincarnated spirit of Lou Gehrig
Major League Baseball Celebrates Lou Gehrig Day - Columbia University Athletics
Lou Gehrig Day
A Great Yankee's Indian Summer: Did Lou Gehrig Experience a Temporary ALS Reversal While Playing in August 1938?