I believe that you might have to contact The Colorado State Archives.http://www.colorado.gov/dpa/doit/archives/
You might try contacting the Clerk of The Court or vital records board for that county.
Montrose County Vital Records
Montrose County Clerk & Recorder
320 S. 1st Street, Rm 101
P.O. Box 1289
Montrose, CO 81402
That address is given by our resident rnstudent2525, Tiffany