
| Count Alessandro Giuseppe Antonio Anastasio Volta, invented | |
| the electric battery. | |
| Louis Comfort Tiffany, glassmaker | |
| National Bun Day -- Iceland | |
| Legislature creates the 9 San Francisco Bay Area counties. | |
| Pluto, the ninth planet, is discovered by Clyde Tombaugh. | |
| Golden Gate International Exposition opens on Treasure Island | |
| (which was built for the occasion) in San Francisco Bay. | |
By Scott Labrecque version 9.4.0.0