Subjects
- Science -- History1
- Slaves and slavery.1
- Steel1
- Suspension bridges1
- Technology -- History1
- Transportation2
- Truss bridges1
- Universities and colleges1
- Virginia - General Assembly.1
- Waterways1
- Wheeling Bridge (Wheeling, W. Va.)1
- Women's history -- 1800-18491
- Women's history -- 1850-18991
- Women's history -- 1900-19291
- Women's history -- 1929-19501