The Polo Grounds, The Lost Ballpark of New York's First Baseball Team - Untapped New York

Polo Grounds (New York) – Society for American Baseball Research

The Polo Grounds, The Lost Ballpark of New York's First Baseball Team - Untapped New York

Polo Grounds no-hitters Baseball no-hitters at

The 50 Greatest Baseball Books of All Time

The Dauvray Cup, baseball's first world championship trophy [source: John Thorn's Our Game]

A New York Story - Polo Grounds

Polo Grounds – History of New York City

The Polo Grounds, 1889–1964: A Lifetime of Memories; Ball Park in Harlem Was Scene of Many Sports Thrills - The New York Times

Polo Grounds - history, photos and more of the New York Giants former ballpark

Polo Grounds - Wikipedia