Whether Cowen was paid is uncertain, but negotiations moved forward.
See Duane Swanson, The Northern Pacific Railroad and the Sisseton-Wahpeton Sioux: A Case in Land Acquisition (M.A. thesis, Univ. of Delaware, 1972), 41, 43-44, 48-54.
George Becker and James Smith Jr. to Cooke, Sept. 5, 1872,; Jay Cooke to Brother Harry, May 24, 1872; Cooke to Cass, March 17, 1873, Cooke to B. F. Wade, March 22, 1873, Cooke to Maj. Benj. Thompson, March 22, 1873, LBs, all in Cooke Papers.