It is hereby ordered, under authority found in the act of June twenty-first, nineteen hundred and six (Thirty-fourth Statutes at Large, pages three hundred and twenty-five and three hundred and twenty-six), that the trust or other period of restriction against alienation contained in any patent issued to any Indian for any lands on the public domain be, and the same is hereby, extended for a further period of one year in all cases where such trust or other restrictive period against alienation would otherwise expire during the calendar year nineteen hundred and twenty.
WOODROW WILSON
The White House,
December 23, 1919
Woodrow Wilson, Executive Order 3204—Indians on Public Domain Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/276586