Ellis Paxson Oberholtzer, Jay Cooke: Financier of the Civil War, 2 vols. (Philadelphia: George W. Jacobs, 1907), 1:51, 56-61, 101-2.
capital, Henrietta M. Larson, Jay Cooke: Private Banker (Cambridge: Harvard Univ. Press, 1936), 98.
Oberholtzer, Jay Cooke, 1:212-325, esp. 212-22.
Cooke to Chase, Oct. 25, Nov. 12, 1862, r. 23, Chase Papers.
Salmon Chase to J. Cooke, Nov. 21, Dec. 16, 1861, Cooke to Chase, Nov. 5, 1861, r. 18.
Chase to J. Cooke, Feb. 2, 7, 9, March 7, 8, 22, 1862, J. Cooke to Chase, Feb. 8, March 10, 22, 1862, Chase Papers, r. 19.
Cooke to Chase, June 28, 1862, Cooke Papers.
Chase to Cooke, Nov. 13, 1862, Chase Papers, r. 23.
Chase to Cooke, April 29, 1862, Cooke to Chase, April 30, 1862, Chase Papers, r. 20, Cooke to Chase, July 5, 1862, r. 21, Chase Papers.
Oberholtzer, Jay Cooke, 1:255-63.
Chase to Cooke, June 1, 1863, r. 27, Chase Papers.