Subject
- U'Ren, William Simon, 1859-1
- U, Chang-chʻun, 1898-19591
- U, Chang-chʻun, 1898-1959 -- Juvenile literature1
- U, Che-gil, 1942- -- Catalogs1
- U, Chǒng-gyu, 1718- -- Philosophy1
- U, Chʻang-jae, 1959-1
- U, In-sŏp, 1926-1
- U-110 (Submarine)1
- U-156 (Submarine)4
- U-181 (Submarine)1
- U-2 (Reconnaissance aircraft)3
- U-2 (Reconnaissance aircraft) -- History1
- U-2 Incident, 19608
- U-2 Incident, 1960 -- Public opinion1
- U-2 aircraft6
- U-202 (Submarine)1
- U-202 (Submarine) -- Officers -- Biography1
- U-30 (Submarine)1
- U-505 (Submarine)2
- U-69 (Submarine)1