Pages from engineers casting books.
City of Pittsburgh Waterworks
Pittsburgh City Photographer Collection
Pittsburgh City Photographer Collection, 1901-2002, AIS.1971.05, Archives Service Center, University of Pittsburgh
Waterworks--Pennsylvania--Pittsburgh--Design and construction.; Filters and filtration--Pennsylvania--Pittsburgh--Design and construction.; Lincoln-Lemington-Belmar (Pittsburgh, Pa.).
Public Domain - Anybody may use this photo for any purpose
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