Statistics for occurrence #1 of “St. Augustine” in chapter 1.3 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

... the neighborhood of Cumberland Sound and the St. Mary's River, including Fernandina and Fort Clinch, St. Mary's, and Cumberland Island. Subsidiary expeditions were sent out from this new base, and St. Augustine and Jacksonville to the south, and Brunswick and St. Simon's Island to the north, also came into the possession of the Union forces. The remainder of the year 1862, after the fall of Fort Pulaski...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
St. Augustine (Florida, United States) 462 4 84 0 0 user votes

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