Statistics for occurrence #1 of “Forts Henry” in chapter 11, page 204 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...ches. In the rear of such hasty works, heavier lines often were constructed by large forces working with spades. Semi-permanent works were used both in the East and in the West. Island No.10, Forts Henry and Donelson, and other small works were all of a permanent or semi-permanent character, having more or less of the scientific touch that followed the old school of fortification. But little was kn...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† 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.