On September 27, 1916, the first Native American Day was celebrated, honoring American Indians. From the article:
"In many parts of the U.S., Native American Day is celebrated on the fourth Friday in September. Although not a “national” holiday, Native American Day is a time set aside by individual states to honor, recognize, and appreciate the rich cultural heritage and significant contributions of the indigenous people in their respective states.
One of the earliest advocates for a day to honor Native Americans was Dr. Arthur Caswell Parker. A Cattaraugus Seneca Indian, historian, anthropologist, and author from New York state, Parker’s great-uncle was secretary to Ulysses S. Grant and the first Native to serve as Commissioner of Indian Affairs for the Department of the Interior. Dr. Parker founded several Indian rights organizations, including the National Congress of American Indians and others. Parker persuaded the Boy Scouts of America to set aside a day for “First Americans,” which they did from 1912 to 1915.
According to our research, the rest of the timeline for Native American Day goes something like this:
1916: Possibly the first time an American Indian Day was formally designated in the U.S., when New York’s governor set the second Saturday in May for the observance."