Mesta Machine Co. No. 77, in Supreme Court of Pennsylvania, western district, Mar. term, 1943, in re appeal of Mesta Machine Company from assessment by Board of Property Assessment, Appeals and Review of Allegheny County for 1942 of property in West Homestead Borough, appeal of county of Allegheny; brief for United States, intervener, appeal from order of court of common pleas of Allegheny County at no. 1560, July term, 1942.