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
Schuylkill River Hydrographical Survey 1861-66 by H. P. M. Birkinbine
Outhouse over the Schuylkill near Pottstown
Fairmount Park, bird’s eye view from Lemon Hill, detail
Bird’s eye view of Delaware River and Philadelphia, about 1840
Commencement of laying the main on the East side of the River, 1871
The Fairmount Quadrilles, 1836
New Mill House at Fairmount
