Statistics for occurrence #1 of “San Juan, Porto Rico” in entry hobson-richmond-pearson of Harper's Encyclopedia of United States History:

...uctor. When the war with Spain broke out he was promoted lieutenant, and served on the flag-ship New York on blockade duty, in the bombardment of Matanzas, Cuba, and in the naval expedition against San Juan, Porto Rico . The action, however, which made his name a synonym for gallantry occurred at the entrance of the harbor of Santiago, Cuba, after Admiral Cervera's fleet was positively known to be in that harbor. ...
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