When Kruesi finished making the phonograph Edison put on the tin foil and then recorded the nursery rhyme Mary Had a Little Lamb; Edison's daughter Marion was at the time nearly five years old and his eldest son was almost two. Edison then adjusted the reproducer and the machine reproduced it perfectly.
Spring in Yosemite National Park. Spring is by far the best time to visit Yosemite Valley. In May the waterfalls are at their peak, the wildflowers are blooming, and the summer crowds have not yet arrived. Daytime temperatures are often divine, but be prepared for chilly temperatures at night.
Operating Hours & Seasons. Yosemite National Park is open 24 hours per day, 365 days per year, and no reservations are required to visit. However, the Hetch Hetchy Entrance Station is open only during daylight hours (approximately) and some roads are closed due to snow from around November through May or June. (Check road conditions and Hetch Hetchy hours.)