May 30
1854 On May 30, 1854, the northeastern two-thirds of what would become Wyoming became part of the Nebraska Territory. It remained this way until March 2, 1861, when the Dakota Territory was created.
1854 On May 30, 1854, the northeastern two-thirds of what would become Wyoming became part of the Nebraska Territory. It remained this way until March 2, 1861, when the Dakota Territory was created.