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Subject
- Fort Sumter (Charleston, S.C.)2
- Fortification South Carolina2
- Slave labor2
- Slavery--South Carolina[remove]2
- Slaves--United States2
- Confederate States of America--Defenses1
- Confederate States of America--History1
- Confederate States of America--History, Military1
- Confederate States of America--History--Sources1
- Confederate States of America. Engineer Bureau1
- Confederate States of America. Engineer Dept1