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Subject
- Conservation and restoration[remove]1,113
- Historic sites[remove]1,113
- Fort Moultrie (S.C.)661
- United States--History--Civil War, 1861-1865--Battlefields617
- United States--History--Civil War, 1861-1865439
- Artillery386
- Fort Sumter National Monument (Agency : U.S.)382
- Aerial surveys82
- Tourism70
- Walls57
- Visitors' centers53
- Engineering and construction44
- Docks36
- Military architecture31
- American Revolution Bicentennial, 197630
- Historical reenactments30
- Museums29
- Actors and actresses27
- Harbors--Traffic control22
- Park rangers20