Fairmount Water Works, W.H. Bartlett, 1839
Centre Square Engine House, ca. 1807
Dobson’s Mill, 1884, from History of Philadelphia by Scharf & Wescott
Commencement of laying the main on the East side of the River, 1871
A type of art popular during the 18th century, it features a design cut into a metal or wood surface and then inked and printed on paper.