The New York Giants wore these black alternate uniforms for their 1905 and 1911 World Series appearances.
San Francisco Giants - Wikipedia
Uniforms 1958 - Present
Uncle Mike's Musings: A Yankees Blog and More: October 21, 1980
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New York Giants to wear 1980s-'90s throwback uniforms for 2 games
MLB Jersey & Cap History
Polo Grounds (New York) – Society for American Baseball Research
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New York Giants (Baseball) Team History
San Francisco Giants, History & Notable Players
Circa 1911 Christy Matthewson & John McGraw Original New