Statistics for occurrence #1 of “Havana” in chapter 4.16 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2.:

...uiser Sumter (Captain Raphael Semmes). Captain Wilkes immediately determined to search for the enemy. At Cienfuegos, on the south coast of Cuba, he learned from the United States consul-general at Havana that Messrs. Mason and Slidell, Confederate commissioners to Europe, and their secretaries and families had recently reached that port from Charleston en route to England. He immediately put to sea...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Havana (Cuba) 1,386 16 34 0 0 user votes
Havana (Illinois, United States) 252 0 2 0 0 user votes
Havana (Alabama, United States) 4 0 0 0 0 user votes
Havana (Arkansas, United States) 0 0 0 0 0 user votes
Havana (Florida, United States) 0 0 0 0 0 user votes
Havana (Kansas, United States) 0 0 0 0 0 user votes
Havana (Minnesota, United States) 0 0 0 0 0 user votes
Havana (Missouri, United States) 0 0 0 0 0 user votes
Havana (North Dakota, United States) 0 0 0 0 0 user votes
Havana (Oregon, United States) 0 0 0 0 0 user votes
Havana (Tennessee, United States) 0 0 0 0 0 user votes
Havana (Texas, 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.