Statistics for occurrence #1 of “Crystal River” in chapter 38 of Admiral David D. Porter, The Naval History of the Civil War.:

...goes of arms or provisions in a night and be out of sight of the blockaders when daylight came. Following the coast up to the northward were the Ten Thousand Islands, Charlotte Harbor, Tampa Bay, Crystal River . Cedar Keys, Suwanee River, Appalache Bay, St. George's Bay, Appalachicola, St. Andrew's Bay, and a thousand other places of refuge too numerous to mention. Arms and munitions of war of all kinds...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Crystal River (Florida, United States) 8 6 0 0 0 user votes
Crystal River (Wisconsin, United States) 4 0 0 0 0 user votes
Crystal River (Florida, United States) 0 0 0 0 0 user votes
Crystal River (Michigan, 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.