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Rock Springs

(Encyclopedia)Rock Springs, city (1990 pop. 19,050), alt. c.6,270 ft (1,910 m), Sweetwater co., SW Wyo., on Bitter Creek; inc. 1888. It is a cattle and sheep shipping point and the center of large natural trona min...

Carboniferous period

(Encyclopedia)Carboniferous period kärbənĭfˈərəs [key], fifth period of the Paleozoic era of geologic time (see Geologic Timescale, tablegeologic timescale, table), from 350 to 290 million years ago. The pl...

South Pass

(Encyclopedia)South Pass, broad, level valley (alt. c.7,550 ft/2,301 m), SW Wyo., cutting across the Rocky Mts. It was used by trappers and explorers before Jedediah Smith inaugurated its use as a route for settler...

Klondike

(Encyclopedia)Klondike klŏnˈdīk [key], region of Yukon, NW Canada, just E of the Alaska border. It lies around Klondike River, a small stream that enters the Yukon River from the east at Dawson. The discovery in...

caravan

(Encyclopedia)caravan, group of travelers or merchants banded together and organized for mutual assistance and defense while traveling through unsettled or hostile country. Caravan trade is associated with the hist...

Fort Leavenworth

(Encyclopedia)Fort Leavenworth lĕvˈənwûrthˌ [key], U.S. military post, 6,000 acres (2,430 hectares), on the Missouri River, NE Kans., NW of Leavenworth; est. 1827 by Col. Henry Leavenworth to protect travelers...

Applegate, Jesse

(Encyclopedia)Applegate, Jesse, 1811–88, American pioneer in Oregon, b. Kentucky. With his family he moved (1821) to Missouri, and there in 1843 he joined the Great Migration of more than 900 people over the Oreg...

Kearney

(Encyclopedia)Kearney, city (1990 pop. 24,396), seat of Buffalo co., S central Nebr., on the Platte River; inc. 1873. It is a commercial, industrial, and transportation center in an agricultural area. Plastic and m...

Bierstadt, Albert

(Encyclopedia)Bierstadt, Albert bērˈstät [key], 1830–1902, American painter of Western scenery, b. Germany. After traveling and sketching throughout the mountains of Europe, he returned to the United States. H...

Dodge City

(Encyclopedia)Dodge City, city (2020 pop. 27,788), seat of Ford co., SW Kans., on the Arkansas River; inc. 1875. The distribution center for a wheat and livestock pro...