Statistics for occurrence #1 of “Lieutenant Wilkes” in entry alden-james of Harper's Encyclopedia of United States History:

...an in 1828; lieutenant in 1841; commander in 1855; captain, Jan. 2, 1863; commodore, July 25, 1866; and rear-admiral, June 19, 1871. He was a participant in the South Sea Exploring Expedition under Lieutenant Wilkes , and served under Commodore Conner on the Gulf coast of Mexico during the war with that country. He was active in the reinforcement of Fort Pickens; in the expedition against Galveston; as commande...
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