The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau pg.127

That policy was declared by the government on April 17, 1917, and soon after the situation I spoke about prevailed.” 1,011 Blackfeet Indians had been forced to accept fee patent title to 312,250 acres that alienated the Indian trust lands to whites and created a large pool of landless Blackfeet Indians on the Blackfeet Indian Reservation.  

The Senate Indian Committee of the United States Senate attempted to inquire into the circumstances surrounding the issuance of a fee patent to Peter Tail Feathers but were stonewalled by Commissioner of Indian Affairs Scattergood: “There is enclosed information received from Acting Superintendent Stone of the Blackfeet Reservation which he advised was compiled for you at your request when the Committee of the United States Senate was on that reservation. He sent the information through this office for delivery to you because he was somewhat in doubt whether it was within his province to furnish information as to the Sherburne interests without the knowledge of this office. It is understood from him that the lands belonging to the Sherburne interests were acquired from Indians to whom patents in fee had been issued and if so there would be no records in the Indian Service as to how these lands were acquired or as to the consideration paid for them.”
-The Sacred Buffalo Vision by Robert J. Juneau and Robert C. Juneau  
pg.127