Battle of Germantown map, 1777
“A Snake That Will Be Straightened Out,” map of Frankford Creek with proposed changes, 1949
Plan of the City of Philadelphia and Adjoining Districts, 1830
Map of Philadelphia showing Population in year 1920
Map of the County of Philadelphia from Actual Survey, 1843
Outline Map of the County and City of Philadelphia and Vicinity, 1883
Philadelphia the Manufacturing and Industrial Capital map, 1906
1779 Revolutionary War-era map of Philadelphia and environs
Schuylkill River Hydrographical Survey 1861-66 by H. P. M. Birkinbine
