Region
- Pennsylvania--Politics and government 2 results
- Philadelphia (Pa.) 2 results
- Philadelphia County (Pa.) 1 results
- United States--History--Civil War, 1861-1865 2 results
- United States--History--Civil War, 1861-1865--Engineering & construction 1 results
- United States--History--Civil War, 1861-1865--Maps 1 results
- United States--History--Civil War, 1861-1865--Military tactics--Union 1 results
- United States--History--Civil War, 1861-1865--Personal narratives, Union 1 results
- United States--Politics and government--1861-1865 1 results