See, e.g., CPH to Hopkins, Sept. 14, 1872, LB, 2:175; CPH to Hopkins, May 7, 1872, 2:115, both in box 20, Hopkins Collection.
Central Pacific Railroad Company v. Alfred A. Cohen, Statement of the Case (1876), p. 1, Huntington Library.

See, e.g., CPH to Hopkins, Sept. 14, 1872, LB, 2:175; CPH to Hopkins, May 7, 1872, 2:115, both in box 20, Hopkins Collection.
Central Pacific Railroad Company v. Alfred A. Cohen, Statement of the Case (1876), p. 1, Huntington Library.
CPH to Hopkins, May 15, 1876, LB, 9:23, box 24, Hopkins Collection.
A. N. Towne to CPH, March 7, 1876, CPH Papers, ser. 1, r. 9.
Central Pacific Railroad Company v. Alfred A. Cohen (1876), 2-3.
CPH to Hopkins, May 12, 1876, LB, 9:19, box 24, Hopkins Collection.
CPH to Colton Oct. 26, 1875, Huntington Letters, 4:397.
Alfred A. Cohen, Southern Pacific Railroad First Mortgage Bonds: Review of the Statements of Mr. C. P. Huntington, Agent and Attorney (San Francisco, 1876).