Statistics for occurrence #1 of “Captain Rios” in entry united-states-of-america-missouri of Harper's Encyclopedia of United States History:

...ut 15 miles above St. Genevieve, surrendering the fort to the British, removes with officers and troops to St. Louis and assumes command of upper Louisiana......July 17, 1765 Spanish troops under Captain Rios reach St. Louis; Rios takes possession in the name of the King of Spain......Aug. 11, 1768 Pontiac, chief of the Ottawas, who was murdered at Cahokia, is buried at St. Louis, where he was a guest...
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