1. In 1985, the largest slot machine jackpot in history was won in Lake Tahoe. A retired flight attendant from Los Angeles won $7,961,975 on a $3 play at the Harrah's Casino.

2. On May 13, 1870, Virginia City, Nevada was rocked by an explosion at the Yellow Jacket Mine. A total of 35 miners were killed in what was the worst mining disaster in the state's history.

3. In 1928, the state of Nevada passed a law that allowed for the legalization of gambling. This decision would become a major source of revenue for the state and lead to the development of Las Vegas as a world-renowned destination for gambling and entertainment.

4. On May 13, 1931, construction began on the Hoover Dam in Black Canyon on the Colorado River. The project created thousands of jobs during the Great Depression and stands today as a testament to American engineering and ingenuity.

5. The infamous gangster Bugsy Siegel, known for his involvement in the development of the Las Vegas Strip, was murdered on May 13, 1947 at his Beverly Hills home. His death is still shrouded in mystery and conspiracy theories.