Wyoming between the Sierra Madre Mountains and the Snowy Range near Grand Encampment. Once government-sponsored expeditions to the Yellowstone country began, reports by Colter and Bridger, previously believed to be apocryphal, were found to be true. This led to the creation of Yellowstone National Park, which became the world's first national park in 1872. Nearly all of Yellowstone National Park lies within the far northwestern borders of Wyoming. On December 10, 1869, territorial Governor John Allen Campbell extended the right to vote to women, making Wyoming the first territory and then United States state to grant suffrage to women. In addition,
South Flat, Wyoming School, and Worland High School . South Flat, Wyoming South Flat is an unincorporated community in Washakie County, Wyoming, United States. The population was 374 at the 2000 census, when it was a census-designated place (CDP). South Flat is located at (43.930394, -108.020176). According to the United States Census Bureau, in 2000 the CDP has a total area of 22.2 square miles (57.4 km), of which, 21.7 square miles (56.2 km) of it is land and 0.5 square miles (1.3 km) of it (2.25%) is water. As of the census of 2000, there were 374 people, 133 households, and 109