Maps. Plan and profile, Trinity River, Hawkins Bar to Douglass City, Calif., dam sites, topography by J. J. Walsh, W. R. Calbert, H. L. Pumphrey, F. A. Johnson, H. L. Coffman and K. D. Dunnan, surveyed in 1934, 1945, 1946, 1947 and 1949. n. p.