Maps. Plan of North Fork Humboldt River, Nev., from month to mile 86, dam sites, topography by C. E. Hunter, George K. Jensen, R. S. Reinhold, S. W. R. Thompson, L. E. Felsted, and C. L. Gundlach, surveyed in 1938 and 1939. Scale 1:31,680, contour interval on land 10 ft., contour interval on river surface 5 and 10 ft.