From site: Lectures by and about Native Americans that pay tribute to the rich ancestry and traditions of Native Americans.
The first American Indian Day in a state was declared on the second Saturday in May 1916 by the governor of New York. Several states celebrate the fourth Friday in September. In Illinois, for example, legislators enacted such a day in 1919. Presently, several states have designated Columbus Day as Native American Day, but it continues to be a day we observe without any recognition as a national legal holiday.