![Photograph of Roberts Mill on Wingohocking Creek in Germantown, built in the late 17th century. (Photograph by J. C. Browne, 1871. Castner Collection/Free Library of Philadelphia)](https://waterhistoryphl.org/wp-content/uploads/RobertsMill-Wingohocking-20040210200.jpg?w=300)
![Photograph of Roberts Mill on Wingohocking Creek in Germantown, built in the late 17th century. (Photograph by J. C. Browne, 1871. Castner Collection/Free Library of Philadelphia)](https://waterhistoryphl.org/wp-content/uploads/RobertsMill-Wingohocking-20040210200.jpg?w=300)
![Old U. S. Navy Yard](https://waterhistoryphl.org/wp-content/uploads/2016.002.0057-scaled.jpg?w=300)
Old U. S. Navy Yard
![](https://waterhistoryphl.org/wp-content/uploads/Schuylkill_frombelowSouthStBr_color_PictAm_AEL-scaled.jpg?w=300)
Schuylkill River from below the South Street Bridge, 1873
![](https://waterhistoryphl.org/wp-content/uploads/RichmondCoalDepot_Delaware_PictAm_AEL-scaled.jpg?w=300)
Coal Depot, Richmond, on the Delaware (Picturesque America)
![](https://waterhistoryphl.org/wp-content/uploads/Schuylkill_frombelowSouthStBr_PictAm_AEL-scaled.jpg?w=300)
Schuylkill River from below the South Street Bridge, 1873
![McDonnell filter advertisement](https://waterhistoryphl.org/wp-content/uploads/B.3_SCAN_waterdept002_300dpi.jpg?w=300)
McConnell Germ-Proof Filters ad
![Front and Market, 1881](https://waterhistoryphl.org/wp-content/uploads/A.5b_FINAL_pdcl00031_cropedit.jpg?w=300)
Front St. and Market St., 1881
![Leicester Knitting Mills, Charles Spencer & Co.](https://waterhistoryphl.org/wp-content/uploads/2016.002.0035-scaled.jpg?w=300)
Charles Spencer & Co., Leicester Knitting Mills, Germantown, Philadelphia
![Henry Disston & Sons, Keystone Saw, Tool, Steel and File Works, 1884 (2004.007.0005)](https://waterhistoryphl.org/wp-content/uploads/Disston_Keystone-Saw_20040070005_300.jpg?w=300)
Henry Disston & Sons Keystone Saw Works
![Baldwin Locomotive Works, 1884](https://waterhistoryphl.org/wp-content/uploads/2004.007.0004-scaled.jpg?w=300)
Baldwin Locomotive Works
![William Wood & Co., Manufacturer of cotton and woollen goods](https://waterhistoryphl.org/wp-content/uploads/2004.007.0002-scaled.jpg?w=300)