Charles Spencer & Co., Leicester Knitting Mills, Germantown, Philadelphia
Philadelphia Standard Distribution Valve
Standard Philadelphia (B) Hydrant
Philadelphia Water Department Fire Hydrant
Commencement of laying the main on the East side of the River, 1871
Engine House, Belmont Works
Diagram showing the daily pumpage for the year 1877
City of Philadelphia Water Loan Certificate, 1872
Plan for the Collection, Purification and Disposal of the Sewage of the City of Philadelphia, 1912
The Fairmount Quadrilles, 1836
