Executive Order 5728—Extension of Trust Period on Allotments of Otoe and Missouria Indians, Oklahoma
It is hereby ordered, under authority contained in section 5 of the act of February 8, 1887 (24 Stat. 388-389), that the trust period on allotments made to members of the Otoe and Missouria tribes of Indians in Oklahoma, whose trust period expires during the calendar year 1931, be, and the same is hereby, extended for a period of 10 years.
The White House,
September 29, 1931.
Herbert Hoover, Executive Order 5728—Extension of Trust Period on Allotments of Otoe and Missouria Indians, Oklahoma Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/276806