Chief Engineer's Office D.N.V., Maj. Gen. J. F. Gilmer Chief Engineer, Map of Montgomery County. From Surveys and Reconnaissance By Lieut. C.S. Dwight Engr. Corps P.A. Made Under Direction ofMaj. A. H. Campbell Engr. Corps P.A.C.S.

Chief Engineer's Office D.N.V., Maj. Gen. J. F. Gilmer Chief Engineer, Map of Montgomery County. From Surveys and Reconnaissance By Lieut. C.S. Dwight Engr. Corps P.A. Made Under Direction ofMaj. A. H. Campbell Engr. Corps P.A.C.S., Map-0763, Folder: 1. Special Collections, Virginia Tech. https://aspace-dev.cloud.lib.vt.edu/repositories/2/resources/1121 Accessed April 11, 2026.