Letter report to H. H. Sinclair, Esq., Vice President, Great Western Power Co.,San Francisco. Partial contents: Report of A. E. Chodzko, M.E., on the mathematical analysis of the stresses involved in the multiple arch dam as designed for Great Western Power Company : letter report to J. D. Schuyler -- Estimate of the cost of an Eastwood multiple arch dam for a 110-foot reservoir at Big Meadows for the Great Western Power Company -- Letter report to Great Western Power Co., New York / by Alfred Noble, C. E., May 12, 1911 -- Exhibit "G," Notes and comments on J. R. Freeman's report of 1905 relative to his investigations at Canyon Dam site, Big Meadows.