Executive Order 1798—Revocation of Executive Order No. 1540
It is hereby ordered that Executive order No. 1540, dated May 29, 1912, reserving certain tracts of land in Arizona from settlement, entry, sale, or other disposition for use of the Walapai Indians be, and the same is hereby, revoked.
The White House,
July 18, 1913
Woodrow Wilson, Executive Order 1798—Revocation of Executive Order No. 1540 Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/276629