"Contour interval 1000 feet." Pen-and-ink on base map: Map of Texas and parts of adjoining territories / compiled by and under the direction of Robert T. Hill ; drawn by Henry S. Selden and Willard D. Johnson, 1899 ; Andrew B. Graham Co., photo-lithographers, Washington, D.C. Available also through the Library of Congress Web site as a raster image.
Hill, Robert Thomas; Selden, Henry S.; Johnson, Willard D.; Andrew Graham Co.
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