The Iron Horse:: Lou Gehrig's Impact on Baseball

1.2 Introduction to Baseball

1.4 Signing with the New York Yankees

2.1 Joining the New York Yankees

2.2 Breakout Seasons

2.3 Becoming the Iron Horse

2.4 World Series Success

3 Difficult Challenges

3.1 The Onset of ALS

3.2 Playing Through Adversity