Bache, A. D. (Alexander Dallas), 1806-1867. from a trigonometrical survey under the direction of A.D. Bache, Superintendent of the Survey of the Coast of the United States ; triangulation by ... The Survey.
Bache, A. D. (Alexander Dallas), 1806-1867. from a trigonometrical survey under the direction of A.D. Bache, Superintendant of the Survey of the Coast of the United States ; triangulation by ... The Survey.
United States, Hydrographic Office. Depths shown by soundings; relief by form lines and spot heights 1940 variation compass Shows low water areas, drainage, roads, vegetation, buildin... U.S. Navy Hydrographic Office,.
1915. Sanborn Map Company. Summerhill, Cambria County, Pennsylvania, November 1914. 1 map : col. ; 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1918. Sanborn Map Company. Summerville, Jefferson County, Pennsylvania, September 1918. 1 map on 3 sheets : col. ; sheets 65 x 54 cm. Scale approximately 1:600. 50 ft. to an... Sanborn Map Company.