Statistics for occurrence #1 of “Mulberry Island” in chapter 15, page 306 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.:

...River below the mouth of the Appomat-tox, by having works erected on the site of old Fort Powhatan, about twelve miles below the confluence of the two rivers, and at Jamestown Island, Hardin's Bluff, Mulberry Island , and Day's Point. In July, 1861, the citizens of Richmond were aroused to their patriotic duty of helping in the fortification of the city, and, by formal resolution of a committee on defenses, p...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Mulberry Island (Virginia, United States) 66 2 2 0 0 user votes
Mulberry Island (Illinois, United States) 0 0 0 0 0 user votes
Mulberry Island (Louisiana, United States) 0 0 0 0 0 user votes
Mulberry Island (Virginia, United States) 0 0 0 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.