It shall be the duty of every licensee to make books and records avail­able upon rea­son­able notice for the pur­pose of inves­ti­ga­tion and con­trol by the Liquor Con­trol Com­mis­sion­er.  Such books and records need not be main­tained on the licensed premis­es, but must be main­tained in the State of Illi­nois.