1915. Geological Survey (U.S.). Scale 1:62,500 Relief shown by contours and spot heights. Contour interval 50 ft. "Surveyed in 1893-94." Text and ill. on verso. Department of the ... The Survey.
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Geological Survey (U.S.). Contour interval 20 feet. Surveyed in 1891. Shows mines and placer diggings. U.S. Geological Survey.
Geological Survey (U.S.) and Thompson, A. H. (Almon Harris), 1839-1906. Relief shown by contours. Contour interval 20 feet. "A.H. Thompson, Geographer ; E.M. Douglas, Topographer in charge ; Triangulation by E.M. Dougla... U.S. Geological Survey.
1891. Sanborn Map Company. California & Coal Centre, Washington Co., Pa., Nov. 1891. 2 maps on 2 sheets : col. ; sheets each 65 x 54 cm. Scale approximately 1:600. 50 ft. to... Sanborn Map Company.
1896. Sanborn Map Company. California & Coal Centre, Washington Co., Penna., Aug. 1896. 1 map on 3 sheets : col. ; sheets each 65 x 54 cm. Scale approximately 1:600. 50 ft. ... Sanborn Map Company.
1901. Sanborn Map Company. California and Coal Centre, Washington Co., Penn., June 1901. 1 map on 3 sheets : col. ; sheets each 65 x 54 cm. Scale approximately 1:600. 50 ft.... Sanborn Map Company.
1907. Sanborn Map Company. California, Washington Co., Pa., July 1907. 1 map on 11 sheets : col. ; sheets each 65 x 54 cm. Scale approximately 1:600. 50 ft. to an in. Sanborn Map Company.
1913. Sanborn Map Company. California, Washington County, Pennsylvania, March 1913. 1 map on 11 sheets : col. ; sheets each 65 x 54 cm. Scale approximately 1:600. 50 ft. to ... Sanborn Map Company.
1927. Sanborn Map Company. California, including East Pike Run Township and Coal Centre, Washington Co., Pennsylvania, Feby. 1927. 1 map on 12 sheets : color ; sheets each 65... Sanborn Map Company.
Henry Gannett, chief geographer . . .. Relief shown by contours and spot heights. Contour interval 100 feet. Surveyed in 1884. U.S. Geological Survey.