| June 26, 1876 19 Stat. 61 |
Congress established the U.S. Circuit Court for the District of Colorado and assigned the district to the Eighth Circuit. The act became effective upon the admission of the State of Colorado on August 1, 1876. |
| March 3, 1911 36 Stat. 1087 |
Congress abolished the U.S. circuit courts, effective January 1, 1912. |