1. "The Design and Construction of Dams " by Edward Wegmann John Wiley & Sons Inc. New York N. Y. 1st Ed. 1888; 8th Ed. 1927. (a) 1st Ed. Preface. (b) 8th Ed. p. 221. (c) 8th Ed. p. 1. (d) 8th Ed. p. 57. (e) 8th Ed. p. 2. (f) 8th Ed. p. 3. (g) 8th Ed. p. 6. (h) 8th Ed. p. 7. (i) 8th Ed. p. 9. (j) 8th Ed. p. 10.
2. 200-Year-Old Masonry Dams in Use in Mexico," by Julian Hinds;Engineering News-Record,1932
3. Stability of Straight Concrete Gravity Dams," by D. C. Henny, Transactions;ASCE,1934
4. "The Significance of Pore Pressure in Hydraulic Structures " by L. F. Harza ibid. Vol. 114 1949 p. 193.
5. "Stresses in Masonry Dams " by William Cain ibid. Vol. 64 1909 p. 208.