This letter dated August 6, 1956, from Acting Commissioner of the United States (US) Department of the Interior to Three Affiliated Tribes Tribal Chairperson Martin Cross, concerns tribal membership rolls and the closing date for enrollment applications. Utz expresses concern that tribal members were not given enough time to submit applications for enrollment. Utz requests additional information for children who have submitted for enrollment and requests additional information for each rejected enrollment application. This letter was copied to US Senator William Langer.
There are some handwritten notes on the letter.https://commons.und.edu/langer-papers/1879/thumbnail.jp