Henry M. Teller was an American politician who served as a U.S. Senator from Colorado from 1876 to 1882 and again from 1885 to 1909. He was a member of the Republican Party and played a significant role in the development of Colorado as a state. Teller was known for his advocacy of mining interests and his support for the Free Silver Movement, which aimed to increase the money supply. In addition to his Senate career, Teller held various positions, including serving as the Secretary of the Interior under President Ulysses S. Grant. He was influential in shaping policies related to land and natural resources during his tenure. Teller's legacy includes his commitment to the rights of miners and his efforts to promote economic growth in the West.