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Missouri, river, United States

(Encyclopedia)Missouri, river, c.2,565 mi (4,130 km) long (including its Jefferson-Beaverhead-Red Rock headstream), the longest river of the United States and the principal tributary of the Mississippi River. The l...

Kerr, Archibald John Kerr Clark

(Encyclopedia)Kerr, Archibald John Kerr Clark: see Inverchapel of Loch Eck, Archibald John Kerr Clark Kerr, 1st Baron. ...

Croghan, George, 1791–1849, American military officer

(Encyclopedia)Croghan, George, 1791–1849, American military officer, b. near Louisville, Ky.; nephew of George Rogers Clark and William Clark. He won public acclaim and a congressional award for his defense of Fo...

Nobile, Umberto

(Encyclopedia)Nobile, Umberto o͞ombĕrˈtō nōˈbēlā [key], 1885–1978, Italian aeronautical engineer and arctic explorer. He designed the dirigible Norge and piloted it in the Amundsen-Ellsworth flight over t...

Christian Endeavor

(Encyclopedia)Christian Endeavor, association in evangelical Protestant Churches for strengthening spiritual life and promoting Christian activities among its members. The first Young People's Society of Christian ...

Atlanta University Center

(Encyclopedia)Atlanta University Center, at Atlanta, Ga.; coeducational. The largest consortium of historically African-American educational institutions in the country, it was organized in 1929 when three schools�...

Vigo, Francis

(Encyclopedia)Vigo, Francis vēˈgō, vīˈgō [key], 1747–1836, American frontier trader and merchant, supporter of the American Revolution. He was born at Mondovi, Italy, and originally named Giuseppe Maria Fra...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

Osage, indigenous people of North America

(Encyclopedia)Osage ōˈsāj, ōsājˈ [key], indigenous people of North America whose language belongs to the Siouan branch of the Hokan-Siouan linguistic stock (see Native American languages). In prehistoric time...

Columbia, river, Canada and the United States

(Encyclopedia)Columbia, river, c.1,210 mi (1,950 km) long, rising in Columbia Lake, SE British Columbia, Canada. It flows first NW in the Rocky Mt. Trench, then hooks sharply about the Selkirk Mts. to flow S throug...