Mahl Memoir, Southern Pacific Co., F-12, Mahl Papers.
Mahl Memoir, Harriman--General O-6, Mahl Papers.
J. T. Mahl to William Mahl, Sept. 23, 1895, William Mahl to J. T. Mahl, Jan. 30, 1899, Mahl to Father, Feb. 7, 1899, J. T. Mahl to Father, March 7, 1899, box 2E460, Mahl Papers.
Wallet is in box 2E462, Mahl Papers.
Mill, Auguste Comte, 94, 96.