Other
- Canals and railroads--19th century
- Centennial Exhibition (1876 : Philadelphia, Pa.)
- Delaware & Schuylkill Canal 1 results
- Engineering--Pennsylvania--Philadelphia 1 results
- Pennsylvania Railroad--19th century 1 results
- Railroads--Pennsylvania--19th century 1 results
- Separation and divorce--19th century 1 results
- Smallpox--Pennsylvania--Philadelphia 1 results