4th » Atkinson & Alexander publish 'The Saturday Evening Post' for the first time as a weekly newspaper.
10th » Missouri is admitted as the 24th U.S. state.
21st » Jarvis Island is discovered by the crew of the ship, 'Eliza Frances'.
24th » The Treaty of Córdoba is signed in Córdoba, Veracruz named Córdoba, now in Veracruz (state) named Veracruz, Mexico, concluding the Mexican War of Independence from Spain.
26th » The University of Buenos Aires, Argentina, is officially opened.
Famous Birthdays on August in 1821
4th » Louis Vuitton (designer) called Louis Vuitton, French fashion designer, founded Louis Vuitton (d. 1892)
4th » James Springer White, American religious leader, co-founded the Seventh-day Adventist Church (d. 1881)
10th » Jay Cooke, American financier, founded Jay Cooke & Company (d. 1905)
31st » Hermann von Helmholtz, German physician and physicist (d. 1894)