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Historic resources from our archives - images, maps, documents, and more.
Wissahickon Pipe Aqueduct, Roxborough to Mt. Airy, 1868
Bridge Street Draw, construction of piers, ca. 1896
69th St. Sewer and Culvert across Lansdowne AVe.
Showing the method of sinking the pipe on the bed of the river
Torresdale Conduit work gang, 1906