. . "South Carolina" . . . . . . . . . . . . "Mystery."@en . "David and Cathy vacation in South Carolina and discover a crude map which leads them deeper and deeper into adventure."@en . . . . . "The secret of Crossbone Hill"@en . "The secret of Crossbone Hill" . . . . "David and Kathy find treasure in the South Carolina swamps. Grades 4-6." . . . . "Fiction"@en . "Fiction" . . "Juvenile fiction."@en . "Juvenile works"@en . . . . . "Juvenile works" . "Detective and mystery stories"@en .