955 Aug 10 Otto organized his nobles and defeated the invading Magyars at the Battle of Lechfeld in Germany.
1539 Aug 10 King Francis of France declared that all official documents were to be written in French, not Latin.
1846 Aug 10 President James Polk signed a measure establishing the Smithsonian Institution. The US Congress chartered the Smithsonian Institution, named after English scientist James Smithson (1765-1836), whose bequest of $500,000 made it possible. The Smithsonian Institute was born and Joseph Henry became its first secretary.Read More