Cottonwood Creek Project. Shasta and Tehama Counties, California: Dutch Gulch Lake Intensive Cultural Resources Suney.Jerald J. Johnson and Dorothea J Theodoratus. Sacramento: U. S. Army Corps of Engineers, 1984, 460 pp., 33 figs., 21 plates, 51 maps, 45 tables, bibliography, gratis (paper). Cottonwood Creek Project, Shasta and Tehama Counties. California: Tehama Lake Intensive Cultural Resources Survey.
Jerald J. Johnson and Dorothea J Theodoratus. Sacramento; U, S, Army Corps of Engineers, 1984, 228 pp., 3 figs., 11 plates, 14 maps, 32 tables, bibliography, gratis (paper).