1. The Nevada State Museum opened on April 15, 1941 - The museum, which is located in Carson City, features exhibits on the natural and cultural history of Nevada, including geology, mining, Native American cultures, and the development of statehood.

2. Nevada became a state on October 31, 1864, but it was on April 15, 1865, that President Lincoln declared the state's admission to the Union official - This was just a few days after Lincoln was assassinated, so the news didn't reach Nevada until a few weeks later.

3. On April 15, 1912, the ill-fated Titanic sank off the coast of Newfoundland, and a memorial to the disaster can be found in the town of Tonopah - The memorial was erected by the Women's Relief Corps, a patriotic organization that was founded on the principle of aiding soldiers and their families.

4. The first-ever licensed casino in the United States, the Northern Club, opened in Reno on April 15, 1931 - The casino was operated by a partnership of wealthy investors, including W.M. Ballinger, E.L. Cord, and George Wingfield.

5. On April 15, 1971, the University of Nevada, Reno, held its first-ever student-led protest, in which students demanded greater voice and participation in university decision-making - The protest ended peacefully, but it marked a turning point in the university's history, as students began to demand greater control over their education and lives.