Thom. Scott to Painter, Nov. 26, 1873, Painter Papers.
Painter to Scott, March 21, 1871, Painter LBs, 1871-76, box 30, Painter Papers.
Painter to ?, Jan. 23, 1874, Painter LBs, 1871-76, box 30, Painter Papers.
Dodge to Painter, March 31, 1877, Painter to Dodge, April 1, 1877, Dodge to Painter, April 4, 1877, Painter to Dodge, April 5, 1877, GWD to Painter, April 6, 1877, Painter to Dodge, April 8, 1877, Painter to Gould, April 8, 1877, Dodge to Painter, April 13, 1877, box 3, 1874-77, Painter Papers.
Boyd to CPH, Jan. 10, 13, 1880, CPH Papers, ser. 1, r. 18.
Oberholtzer, Jay Cooke, 2:179.
Testimony of CPH, PRC, 1:24-25.