Subjects
- Telegraph industry.1
- Telephone systems.1
- Textile industry.1
- Thread industry.1
- Tool & die industry.1
- Transportation.1
- Trusses.1
- Tuberculosis--Treatment.1
- Tubular bridges.1
- Typhoid fever.1
- United States--History--Civil War, 1861-1865.1
- Voyages to the Pacific coast.1
- War crimes.1
- Warships.1
- Water supply.1
- Waterworks.1
- Women abolitionists.1
- Women employees.1
- Women social reformers.1
- Women teachers--United States.1