Author: STEVENSON, J.J.
Title: Report of progress in the Fayette & Westmoreland district of the bituminous coal-fields of western Pennsylvania. Part I. Eastern Allegheny County and Fayette and Westmoreland counties west from Chestnut Ridge. Part II. The Ligonier Valley.
Description: 1877-78. Second Geol. Surv. Pennsylvania 1876, 1877, Harrisburg. 437+331 pp. fp. (map), 50+107 fig. 1+3 plt. h.t. 3+4 fold. & col. geol. maps. Contemp. plain wrps. part I with title shield, part II lacking back cover, otherwise contents very good, uncut.

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