The 38th State is immediately nicknamed the Centennial State .
President Ulysses S. Grant proclaims that the Territory of Colorado has been accepted into the Union as the State of Colorado on 1876 - 08 - 01 .
The 38th State is immediately nicknamed the State of Colorado   .
President Ulysses S. Grant proclaims that the Territory of Colorado has been accepted into the Union as the State of Colorado on 1876 - 08 - 01 .