| Spies -- Soviet Union -- History -- Juvenile literature. Matches 1 item |
| Spies -- Switzerland -- Biography. Matches 1 item |
| Spies -- United States. Matches 1 item |
| Spies -- United States -- Biography. Matches 18 items |
| Spies -- United States -- Biography -- Juvenile literature. Matches 1 item |
| Spies -- United States -- History. Matches 2 items |
| Spies -- United States -- History -- 18th century. Matches 1 item |
| Spies -- United States -- History -- 20th century. Matches 2 items |
| Spies -- United States -- History -- 20th century -- Juvenile literature. Matches 1 item |
| Spies -- United States Union -- History. Matches 1 item |