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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 ...

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...

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...

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...