Native American Heritage Day
State of the Schuylkill River in 1876: Sewage pollution and possible remedies
Two reports on the state of the Schuylkill River, 1867
Streams, islands, and ferries of early Philadelphia
Schuylkill Navigation Company Scrapbook
Schuylkill River Hydrographical Survey 1861-66 by H. P. M. Birkinbine
View from the Inclined Plane near Philadelphia, 1838
Fairmount Water Works, about 1860
Showing the method of sinking the pipe on the bed of the river
The Fairmount Quadrilles, 1836
