Native American activist who served as the Commissioner of Indian Affairs from 1933 to 1945.
He studied at Columbia University and College de France.
He helped pen the Indian Reorganization Act of 1934 in attempted to improve the treatment of Native Americans in the United States.
He was the son of Charles Collier, the former Mayor of Atlanta. He had a son, himself, named John Jr., who would later become an anthropologist.
He served as the Commissioner of Indian Affairs under the presidency of Franklin D. Roosevelt.