Jul 1 Mammoth Cave National Park established with 45,310 acres, including world's largest cave network in Kentucky, US [1] Jul 3 John Couch Adams decides to determine position of an unknown planet by irregularities it causes in the motion of Uranus Jul 5 Thomas Cook opens first travel agency Jul 17 British humorous and satirical magazine "Punch" first published; it finally closed in 2002 Jul 18 Pedro II, aged 15-years old, formally crowned Emperor of Brazil after a 10-year regency Jun 1841 Historical Events by Year Aug 1841 Famous People Who Were Authors Dictators Explorers Outlaws Queens Spies
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