Statistics for occurrence #1 of “Charleston harbor” in year 1861, month April of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:

..., and two more are to follow to-morrow. Unwonted activity also prevails in the navy, several vessels being rapidly fitted for service.--World, April 4. The mortar batteries on Morris' Island, Charleston harbor , fired into an unknown schooner. She displayed the stars and stripes, and put to sea. A boat from Sumter with a white flag went out to her; nobody hurt. A shot had gone through her.--(Doc. 49.) ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Charleston Harbor (South Carolina, United States) 1,700 54 36 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.