Colorado State Inspector of Coal Mines

• Fifth Annual Report of the State Inspector of Coal Mines 1917
• 19th, 20th, 21st and 22nd Annual Reports of the State Inspector of Coal Mines 1931 to 1934 Inclusive
• Eleventh Biennial Report of the State Coal Mine Inspector 1903-1904
• Report
• Report, Volume 11, Parts 1903-1904
• Second Annual Report of the State Inspector of Coal Mines 1914
• Tenth Annual Report of the State Inspector of Coal Mines 1922
• Third Annual Report of the State Inspector of Coal Mines 1915
• Thirteenth Biennial Report of the State Coal Mine Inspector
• Twenty-Sixth Annual Report of the State Inspector of Coal Mines