National Pastime Museum: LOU GEHRIG APPRECIATION DAY AT 75 – Marty Appel
Missing Rings: The 1929 New York Football Giants
The Day Babe Ruth Came to Sing Sing – Society for American Baseball Research
April 16, 1929- NY Yankees becomes first team to wear uniforms - The Declaration
Now batting, NUMBER THREE, Babe Ruth… – Behind the Bag
Minnesota Twins Dominate New York Yankees, Sonny Gray Pitches 7 S
New York's 1922 trade for Joe Dugan & Elmer Smith prompted change - Pinstripe Alley
1921: The Yankees, the Giants, and the Battle for Baseball Supremacy in New York eBook : Spatz, Lyle, Steinberg, Steve, Alexander, Charles C.: Kindle Store
Reisman: Rare film of Babe Ruth home run surfaces