Note 287 — XXVI THE DEATH OF MRS. THATCHER

Mrs. Sharp’s History of the Spirit Lake Massacre (1902 edition), pp. 168-171. This stone is more familiarly known in mineralogy as catlinite—being so named from George Catlin, the noted traveler, who first studied it. See Hodge’s Handbook of American Indians, Vol. I, pp. 217-219.