Statistics for occurrence #1 of “Cumberland Sound” in chapter 5 of James Russell Soley, Professor U. S. Navy, Confederate Military History, a library of Confederate States Military History: Volume 7.1, The blockade and the cruisers:

...y, and Altamaha. Brunswick is the only town of importance in this region, with an entrance at St. Simon's Sound. From St. Simon's the line of islands and sounds continues, including St. Andrew's, Cumberland Sound at Fernandina, St. John's, and St. Augustine. Below this point, the coast of Florida consists of narrow reaches of sand enclosing long lagoons, only broken by small and infrequent passes. In the ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Cumberland Sound (United States) 41 2 1 0 0 user votes
Cumberland Sound (Canada) 12 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.