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Schuylkill River above Fairmount Dam, Philadelphia, in 1843
 Historical Images of Philadelphia Augustus Kollner
At Manayunk, Very Low Water
 Historical Images of Philadelphia Augustus Kollner
Flat Rock Dam Above Manayunk
 Historical Images of Philadelphia Augustus Kollner
Hogner - Water Over the Dam - Page 11 and 25
 Children's Literature
Waterworks and Philadelphia Museum of Art
 Historical Images of Philadelphia Philadelphiana
City Atlas of Philadelphia, 22nd ward, 1876, Plate U
 Maps 1876: G. M. Hopkins, City Atlas of Philadelphia, 22nd Ward, Volume 1
Aerial View
 Historical Images of Philadelphia Charles Higgins Negatives
Aerial View
 Historical Images of Philadelphia Charles Higgins Negatives
Aerial View
 Historical Images of Philadelphia Charles Higgins Negatives
Aerials flooding Boathouse Row and Public Boat House and River Drives
 Historical Images of Philadelphia Charles Higgins Negatives
Aerials flooding Boathouse Row and Public Boat House and River Drives
 Historical Images of Philadelphia Charles Higgins Negatives
Atlas of the City of Philadelphia, 1862, Section 9
 Maps 1862: Smedley, Atlas of the City of Philadelphia
Atlas of the City of Philadelphia, 1862, Section 7
 Maps 1862: Smedley, Atlas of the City of Philadelphia
Philadelphia 1930s
 Historical Images of Philadelphia Claude Alexander Negatives