§463a. Extension of boundaries of Papago Indian Reservation
Whenever all privately owned lands except mining claims within the following-described area have been purchased and acquired as authorized in sections 463b and 463c of this title, the boundary of the Papago Indian Reservation in Arizona shall be extended to include the west half of section 4; west half of section 9, township 17 south, range 8 east; all of township 18 south, range 2 west, all of fractional township 19 south, range 2 west; and all of fractional townships 18 and 19 south, range 3 west, except sections 6, 7, 18, 19, 30, and 31 in township 18 south, range 3 west, Gila and Salt River meridian. This extension shall not affect any valid rights initiated prior to July 28, 1937, nor the reservation of a strip of land sixty feet wide along the United States-Mexico boundary made by proclamation of the President dated May 27, 1907 (