Source: Philadelphia Streets Department, Survey and Designs Bureau Creator: Nicholas Scull

Source: Philadelphia Streets Department, Survey and Designs Bureau Creator: P.C. Varle

Source: Historical Society of Frankford

Source: Historical Society of Frankford

Source: Zebooker Collection, Athenaeum of Philadelphia Creator: John Hills

Source: Zebooker Collection, Athenaeum of Philadelphia Creator: John Hills

Source: Historical Society of Frankford Creator: John A. Paxton

Source: Franklin Institute Creator: John A. Paxton

Source: Franklin Institute Creator: J. Simons

Source: Private Collection of William Krispin Creator: The Society for the Diffusion of Useful Knowledge

Source: Historical Society of Frankford Creator: J.C. Sidney, Civil Engineer & Surveyor

Source: Map Collection, Free Library of Philadelphia Creator: Hexamer & Locher

Source: Map Collection, Free Library of Philadelphia Creator: Samuel L. Smedley

Source: Private Collection of Matt Ainslie Creator: G.M. Hopkins

Source: Athenaeum of Philadelphia Creator: Geo. W. & Walter S. Bromley, Civil Engineers

Source: Athenaeum of Philadelphia Creator: George W. & Walter S. Bromley, Civil Engineers

Source: Map Collection, Free Library of Philadelphia Creator: George W. and Walter S. Bromley, Civil Engineers

Source: Athenaeum of Philadelphia Creator: Elvino V. Smith, C.E.