The nineteenth century brought major change to this region. In 1843, Captain John C. Fremont explored and mapped the area, and by the 1870s most of the region's Native American inhabitants had been removed to distant reservations. Homesteaders arrived in the late nineteenth century with cattle, sheep, and crops, establishing farms, ranches, sawmills, and many small towns. Settlers seeking wide-open range settled near Paisley, where fertile land supported sheep and cattle raising as well as feed grains and grasses. By 1870, the town began to grow, and three years later a post office was established. Paisley's landscape still reflects those early days in place names such as Harvey Creek, Withers Lake, and Brattain Butte. Many descendants of early settlers remain in the area, including families on Century Farms operated for at least 100 years, where skills and knowledge are passed from one generation to the next and new homes rise beside old ones. The local economy is based mainly on cattle ranching, farming, the USDA Forest Service, and recreational tourism. The ZX Ranch, headquartered south of Paisley, is one of the largest working cattle ranches in North America and is home to more than 100 varieties of birds, while mule deer, pronghorn, bobcat, cougar, and coyote also roam the land. Ranching is a primary occupation in Lake County, where many buckaroos settled to work ranches and some still ride horseback as they care for cattle day and night, birthing calves in freezing temperatures and watching for coyotes and mountain lions.