- Battle at Booneville Mississippi: Confederate superior power driven out
- Congress outlaws polygamy for the 1st time
- Emperor Alexander II grants Jews right to publish books
- The Russian State Library is founded.
- US Civil War: Day 7 of 7 Days-Battle of Malvern Hill (Poindexter's Farm) Union forces repel Confederate attack
- US Internal Revenue Law imposes 1st federal taxes on inheritance, tobacco & on incomes over $600 (progressive rate)
Day of the Week: Tuesday