Maps. Plan of Yampa River. Colo., from month of Elk River to mile 73. Morrison Creek to mile 10. dam sites, topography by Ernest Blessing, B. F. Martin, R. N. Doolittle, M. E. Volin, and H. K. Linn, surveyed in 1934. 1936, 1938, and 1939. Scale 1:31,680, contour interval on land 20 ft., contour interval on river surface 5 ft. n. p.

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