The board of supervisors of the county in which the law library is established shall provide sufficient quarters for the use of the library upon request of the board of law library trustees, except that the board of supervisors need not provide such quarters when the board of law library trustees determines it has sufficient funds, over and above those necessary for operation and maintenance expenses, to provide its own quarters. Such provision may include, with the room or rooms provided, suitable furniture, window shades, floor coverings, lighting, heat and telephone and janitor service.