Each library system receiving state aid shall furnish an annual report and such information regarding its library service as the State Librarian may from time to time require. The State Librarian may revoke his approval of a library system if he finds that it does not conform to the plan of service or the regulations promulgated by the State Librarian; or in case of a provisional approval, if such library system does not fulfill the terms upon which provisional approval was based. In such a case a library system shall not thereafter be entitled to state aid until its bylaws or plan of service is again approved by the State Librarian.
75 ILCS 10/10