1923. United States. Bureau of Reclamation. Relief shown by hachures and spot heights.; "Map No. 19199."; Inset: Upper Rio Grande drainage basin -- Location of Rio Grande Project. 26 x 54 cen... Bureau of Reclamation (Washington, D.C).
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1925. United States. Bureau of Reclamation. Relief shown by contours, hachures, and spot heights.; "Map no. 21441."; Includes text and index map. 25 x 50 centimeters Scale approximately 1:120... Bureau of Reclamation (Washington, D.C).