The first great fire of early San Francisco started on the east side of the Plaza.
Harriet Tubman escaped from slavery.
The US held its first poultry show at Boston's Public Garden.
Author Edgar Allan Poe was last seen alive. He was disorientated, lying in a gutter in Baltimore, Maryland, US.
Austria launched pilotless balloons against the city of Venice, which became the first air raid in history.
Abraham Lincoln received a patent for a device that would lift a boat over shoals and obstructions.
Walter Hunt patented the safety pin.
A photograph was taken of the 11th US President, James Knox Polk.
