* Act of June 15, 1926 (P.L. 69-392, Ch. 587, 44 Stat. 745; 16 U.S.C. 471a)

Hereafter no National Forest shall be created, nor shall any additions be made to one heretofore created within the limits of the States of Arizona, or New Mexico, except by Act of Congress. (16 U.S.C. 471a)