The New International Encyclopædia/Wilmerding
WIL′MERDING. A borough in Allegheny County, Pa., 8 miles southeast of Pittsburg, on the Pennsylvania Railroad (Map: Pennsylvania, B 3). It has the extensive foundries and machine shops of the Westinghouse Air Brake Company. The growth of the borough has been very rapid, a population of 419 in 1890 having increased to 4179 in 1900.