From The Arthur Conan Doyle Encyclopedia
Carolinas are two south states of USA: South Carolina and North Carolina.
In the Sherlock Holmes stories
- The Ku Klux Klan was formed by some ex-Confederate soldiers in the Southern States after the Civil War, and it rapidly formed local branches in different parts of the country, notably in Tennessee, Louisiana, the Carolinas, Georgia, and Florida. (FIVE, 347)