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Davis, James John

(Encyclopedia)Davis, James John, 1873–1947, American public official, b. Wales. After emigrating (1881) to the United States, he worked as a puddler in ironworks in Pennsylvania and, moving to Elwood, Ind., becam...

Harrisburg

(Encyclopedia)Harrisburg. <1> City (2020 pop. 8,219), seat of Saline co., SE Ill; founded c. 1852. In the mid-19th century, it was a center of woolen and ...

Mahoning

(Encyclopedia)Mahoning məhōnˈĭng [key], river, c.90 mi (140 km) long, rising in NE Ohio, E of Canton. It flows northwest to Alliance, then northeast past Warren, where it turns southeast to flow past Youngstown...

Haviland, John

(Encyclopedia)Haviland, John hăvˈĭlənd [key], 1792–1852, American architect, b. Philadelphia. Haviland was noted as a pioneer in prison architecture. His design for the Pennsylvania Eastern State Penitentiary...

Lodge, Sir Oliver Joseph

(Encyclopedia)Lodge, Sir Oliver Joseph, 1851–1940, English physicist, grad. University College, London (B.S., 1875; D.Sc., 1877). He made valuable contributions to the development of wireless telegraphy and condu...

Collins, Patricia Hill

(Encyclopedia)Collins, Patricia Hill, 1948–, American sociologist and social theorist, b. Philadelphia, Ph.D. Brandeis University, 1984. A noted ...

Swiss Federal Institute of Technology

(Encyclopedia)Swiss Federal Institute of Technology, at Zürich, founded 1855 as the Federal Polytechnic Institute, given its current name 1911. It is a science and technology research university with a solid reput...

McKeesport

(Encyclopedia)McKeesport məkēzˈpôrt [key], city (1990 pop. 26,016), Allegheny co., SW Pa., in hilly terrain at the confluence of the Monongahela and Youghiogheny rivers; settled 1755, inc. as a city 1890. An in...

bluestone

(Encyclopedia)bluestone, common name for the blue, crystalline heptahydrate of cupric sulfate called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue-gray sandstone....

Delaware, river, United States

(Encyclopedia)Delaware dĕlˈəwâr, –wər [key], river, c.280 mi (450 km) long, rising in the Catskill Mts., SE N.Y., in east and west branches, which meet at Hancock. It flows SE along the New York–Pennsylvan...