Yankee Stadium (1923) - Wikipedia
Clem's Baseball ~ Yankee Stadium
Pharrell Williams Throws First Pitch at Yankees vs. Mets Game – WWD
What is on the site of the original Yankee Stadium? - Quora
How does Yankee Stadium compare to other stadiums around the US? - Quora
Yankee Stadium (New York) – Society for American Baseball Research
Old Yankee Stadium's rise and fall: Complete story of 'The House that Ruth Built' 100 years after its opening
Old Yankee Stadium and Mets' Old Stadium: NYC Baseball History
Yankee Stadium - history, photos and more of the New York Yankees ballpark from 1923-2008
A tale of two new New York Stadiums - Sports Illustrated
Polo Grounds – History of New York City
Polo Grounds - history, photos and more of the New York Giants former ballpark