Subjects
- Underground Railroad -- Ohio1
- Underground Railroad -- West Virginia1
- Underwater exploration1
- Union names.2
- Unions -- Coal1
- Unions.5
- Unions. SEE ALSO Labor organization.1
- Uniontown, PA - Methodists.1
- United States - Census returns.1
- United States -- History -- Civil War, 1861-186523
- United States -- History -- Civil War, 1861-1865 -- Diaries4
- United States Army - 2nd Infantry Division - WW II and Korea.1
- United States Army in World War II1
- United States Military Academy2
- United States Navy - USS WEST VIRGINIA.1