Actually the date was August 19, 1921, and he died at West Newton, Massachusetts. August 19 was a Friday.
Seattle Times
George C. Treat
Word has been received by Harry Whitney Treat of the death of his kinsman George C. Treat, brother of the late Charles Treat former treasurer of the United States at West Newton Mass. last Friday.
Mr. Treat was active in Alaskan development and had many friends in Seattle, the Northwest and Alaska. He was 69 years of age.