Statistics for occurrence #1 of “Fort Delaware” in chapter 1.7 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 7: Prisons and Hospitals.:

...drawn. During the bombardment of Charleston, Federal prisoners were confined there under fire, though the city was still inhabited. In retaliation, six hundred Confederate officers were sent from Fort Delaware to Morris Island, and there confined in a stockade in front of the Federal lines, where the projectiles from the Confederate artillery passed over them. Little or no damage was done. There are hu...
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Entity Corpus Doc Corpus Doc  
Fort Delaware (Delaware, United States) 815 26 1 0 0 user votes

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