Fullsize image: https://diqn32j8nouaz.cloudfront.net...w_fullsize.jpgA view inside the Catskill Aqueduct in Yonkers on May 10, 1912, showing the 11-foot-wide steel pipe before a cement mortar lining was placed (foreground), with the lining (middle ground), and before the wooden forms were removed (behind the men)
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