Day Family Records"The Day Family were Anglo traders, on the Navajo Reservation in eastern Arizona. The collection includes the personal and business papers of Sam Day, Sr. (1845-1925) surveyor, Indian trader, legislator and United States Indian Commissioner; Anna Day, Sam Sr.'s wife (1872-1932); and of their children, Charles L. Day (1879-1918), Samuel Day, Jr. (1889-1944), United States deputy Marshall. The collection contains archaeological reports, Navajo land boundary maps and notes, business records, as well as several documents pertaining to Navajo culture, including a copy of the treaty between the U.S. Government and the Navajo nation. The Day Family Records are particularly rich in chronicling early Anglo and Navajo relations. "