Outline Map of Beaver County. Pennsylvania. 1876. (to accompany) Caldwell's Illustrated, Historical, Centennial Atlas Of Beaver County, Pennsylvania. From actual Surveys by & under the directions of J.A. Caldwell. Assisted by C.T. Arms, Sr. C.E. J.A. Underwood, C.E. J.A. Howden. P.L. Mason. W.J. Kerstetter, C.E. W.F. Arms, C.E. J.J. Power, C.E. Published By J.A. Caldwell, Condit, Ohio. 1876. Engraved, Lithographed & Printed By Otto Krebs, Pittsburgh, Pa.
