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Helmholtz, Hermann Ludwig Ferdinand von

(Encyclopedia)Helmholtz, Hermann Ludwig Ferdinand von hĕrˈmän lo͞otˈvĭkh fĕrˈdēnänt fən hĕlmˈhôlts [key], 1821–94, German scientist. Although known especially as a physicist and biologist, he was al...

Hapsburg, Otto von

(Encyclopedia)Hapsburg, Otto von, 1912–2011, Austrian archduke and former pretender to the Austro-Hungarian throne, son of Emperor Charles I and Empress Zita. After World War II began, he went to the United State...

Otto I, king of Bavaria

(Encyclopedia)Otto I, 1848–1916, king of Bavaria (1886–1913). Although incurably insane after 1872, he succeeded his brother King Louis II under the regency of his uncle Luitpold (1886–1912) and Luitpold's so...

Pérez Molina, Otto

(Encyclopedia)Pérez Molina, Otto, 1950–, Guatemalan army officer and politician, b. Guatemala City. Pérez rose through the officer ranks to become a general, leading troops and then military intelligence during...

Nordenskjöld, Nils Otto Gustaf

(Encyclopedia)Nordenskjöld, Nils Otto Gustaf, 1869–1928, Swedish geographer and explorer, nephew of Nils Adolf Erik Nordenskjöld. He headed an expedition to Patagonia (1895–97) and later explored the Klondike...

Otto IV, Holy Roman emperor

(Encyclopedia)Otto IV, 1175?–1218, Holy Roman emperor (1209–15) and German king, son of Henry the Lion, duke of Saxony. He was brought up at the court of his uncle King Richard I of England, who secured his ele...

Graham, Otto Everett, Jr.

(Encyclopedia)Graham, Otto Everett, Jr., 1921–2003, American football player and coach, b. Waukegan, Ill. He was an All-American football and basketball player at Northwestern Univ. before he joined the Cleveland...

Curtis, Cyrus Hermann Kotzschmar

(Encyclopedia)Curtis, Cyrus Hermann Kotzschmar, 1850–1933, American publisher and philanthropist, b. Portland, Maine. He started his first periodical, The People's Ledger, in Boston in 1872. Later, in Philadelphi...

Adelaide, empress consort of Holy Roman Emperor Otto I

(Encyclopedia)Adelaide äˈdĕlhīt [key], c.931–999, empress consort of Holy Roman Emperor Otto I, daughter of King Rudolf II of Arles. After the death (950) of her first husband, King Lothair of Italy, she was ...

Trevelyan, Sir George Otto

(Encyclopedia)Trevelyan, Sir George Otto, 1838–1928, British historian and politician. He served as a Whig member of the House of Commons from 1865 to 1897. He held posts under W. E. Gladstone as civil lord of th...