July 4th marks the 75th anniversary of former New York Yankees first baseman Lou Gehrig's famous farewell speech. Gehrig was no longer able to play baseball after being diagnosed with Amyotrophic Lateral Sclerosis (ALS), which later became more commonly known as Lou Gehrig's Disease. He was just 36 years old when he bid adieu to the Yankee Stadium crowd, and died less than two years later.

Major League Baseball is making an effort to raise awareness for ALS over this long weekend. Yesterday, this MLB.com produced video played at Yankee Stadium during the Rays vs. Yankees game. All 30 starting MLB first basemen recite the speech that has been widely considered baseball's Gettysburg address. There's also a cameo from the current captain of the New York Yankees, Derek Jeter. See the video below.