Wood truss drawbridge, Orthodox Street over Frankford Creek, 1899 [Detail]
State Street pipeline construction, 1904
Belmont Filters construction, 1903
Engine House, Belmont Works
New Mill House at Fairmount
Baldwin Locomotive Works
Lancaster/Schuylkill Bridge (Upper Ferry Bridge)
View of Fairmount Water Works, ca. 1827
State Road triple pipeline construction, 1904