Executive Order 2138—Military Reservation for the National Guard
It is hereby ordered that sec. 10, T. 24 S., R. 28 E., G. S.R.M., Arizona, containing according to the official plat on file in the General Land Office, approved October 25, 1902, 640 acres, be, and the same is hereby, reserved for military purposes for use of the National Guard of Arizona as a rifle range.
It is also hereby ordered that sec. 10, T. 24 N., R. 29 E., G. S. R.M., Arizona, reserved by Executive order No. 1995, dated July 23, 1914, for use of Company G. First Infantry, Organized Militia of the State of Arizona, be released from such reservation, so that the lands shall revert to their former status as part of the Navajo Indian Reservation in said State.
The White House,
February 19, 1915
Woodrow Wilson, Executive Order 2138—Military Reservation for the National Guard Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/276616