Then and now: a historic look at Philadelphia's ballparks
Philadelphia Stadium Paper
John F. Kennedy Stadium (Philadelphia) - Wikiwand
The Jefferson Street Ball Parks (1864–91) – Society for American Baseball Research
Old Images of Philadelphia - Frankford Yellow Jacket Stadium in the late 1920s. The 50 yard line was in the general area of Charles St. and Harbison Ave. The Yellow Jackets played
Old Images of Philadelphia - Originally known as Sesquicentennial Stadium when it opened April 15, 1926, the structure was renamed Philadelphia Municipal Stadium after the Exposition's closing ceremonies. In 1964, it was
Philadelphia - Politics, Revolution, History
West Philadelphia Collaborative History - Map
Then and now: a historic look at Philadelphia's ballparks
Historic hits - Northeast Times
Frankford Stadium Walking And Running Trail - Philadelphia, Pennsylvania, USA
Veterans Stadium - history, photos and more of the Philadelphia Phillies former ballpark
Then and now: a historic look at Philadelphia's ballparks