Calvin Coolidge actually said...
the trust period on allotments made to Indians of the Lower Brule Reservation in South Dakota, which trust expires during the calendar year 1928, be, and is hereby extended for a period of 10 years from date of expiration
Context
Executive Order 4981—Extension of Trust Period on Allotments Made to Indians of the Lower Brule Reservation in South Dakota
10/19/1928