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Exposition Park on Pittsburgh's North Side was home to the Pirates until 1909. Library of Congress photograph

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In 1909, the Pirates moved into Forbes Field, then considered one of the country's most beautiful ballparks. Library of Congress photograph

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Baseball fans wait outside the Forbes Field entrance on Sept. 5, 1938. Post-Gazette files

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This image of Forbes Field was taken May 19, 1947. Post-Gazette files

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The Pirates played the Phillies on May 12, 1958. Post-Gazette files

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Forbes Field was packed for game two of the Worlds Series on Thursday, Oct. 6, 1960. Post-Gazette files