September 1, 1621
In autumn 1621, 52 English Pilgrims and 90 Wampanoag Native Americans gathered at Plymouth Colony for a three-day harvest festival, marking what would become known as the First Thanksgiving in American history.
May 13, 1915
A significant cultural observance honoring America's indigenous peoples, first initiated in 1915 by Dr. Arthur C. Parker, a Seneca Indian who persuaded the Boy Scouts of America to recognize the 'First Americans.'
