Statistics for occurrence #1 of “Morris Island” in chapter 2, page 152 of Comte de Paris, History of the Civil War in America. Vol. 3.:

...
Sullivan's Island, and Fort Sumter, which stands upon a sandbank, a continuation of the southern bank called Morris Island . A space of fifteen hundred yards separates the two forts. A third work, built of masonry, called Castle Pinckney, formerly constituted the entire defences of Charleston; it stood upon a low isla...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Morris Island (South Carolina, United States) 5,391 14 427 0 0 user votes
Morris Island (Massachusetts, United States) 0 0 0 0 0 user votes
Morris Island (Tennessee, United States) 0 0 0 0 0 user votes
Morris Island (Tennessee, United States) 0 0 0 0 0 user votes
Morris 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.