Statistics for occurrence #1 of “Charleston harbor” in chapter 23 of J. B. Jones, A Rebel War Clerk's Diary:

... a fine gun-boat in Stone River (near Charleston) yesterday evening. She had eleven guns and 200 men. But this morning we did better still. Our little fleet of two iron-clads steamed out of Charleston harbor , and boldly attacked the blockading fleet. We crippled two of their ships, and sunk one, completely raising the blockade, for the time being. This will frustrate some of their plans, and may reli...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Charleston Harbor (South Carolina, United States) 1,700 12 36 0 0 user votes

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