EXECUTIVE MANSION, July 6, 1883.
It is hereby ordered that the following-described tract of country in the Territory of Arizona, viz, beginning at a point in the channel of the Colorado River, opposite the mouth of the Gila River, thence up the channel of the Gila River to the range line (when extended) between ranges 19 and 20 west of the Gila and Salt River meridian, thence north on said range line to the first standard parallel south, thence west on said parallel to the channel of the Colorado River, thence down the channel of said river to the place of beginning, be, and the same is hereby, withdrawn from settlement and sale and set apart as a reservation for the Yuma and such other Indians as the Secretary of the Interior may see fit to settle thereon: Provided, however, That any tract or tracts included within the above-described boundaries to which valid rights have attached under the laws of the United States are hereby excluded from the reservation hereby made.
Chester A. Arthur
SOURCE: Kappler, Indian Affairs, Laws and Treaties, US GPO, 1904, p 831-832
Chester A. Arthur, Executive Order - Yuma Reserve Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/371352