The boards of county commissioners of their respective counties, at the expense of the county, shall furnish annually and in due season, to the assessor of the county, suitable blank assessment rolls, prepared in accordance with the provisions of law; shall also provide suitable books and stationery for the use of each of the county officers of their county, together with appropriate cases and furniture for the safe and convenient keeping of all the books, documents, and papers belonging to each of said officers; and also shall provide official seals for each of said officers when the same are required by law.
C.R.S. § 30-11-113