Executive Mansion, March 20, 1884.
It is hereby ordered that the lands embraced within the three existing Executive additions to the Great Sioux Reservation, in Dakota, east of the Missouri River, viz, the one opposite the Standing Rock Agency, the one opposite the mouth of Grand River and the site of the old Grand River Agency, and the one opposite the mouth of Big Cheyenne River and the Cheyenne River Agency, be, and the same are hereby, restored to the mass of the public domain, the same being no longer needed for the purpose for which they were withdrawn from sale and settlement.
Chester A. Arthur.
Source: Kappler, Indian Affairs, Laws And Treaties, US GPO, 1904, P 884-885
Chester A. Arthur, Executive Order—Withdrawing Sioux Indian Land Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/372247