75 ILCS 5/4-1

(75 ILCS 5/4-1) (from Ch. 81, par. 4-1) Sec. 4-1. When the corporate authorities of a city establish a public library, the mayor shall, with the approval of the city council, appoint a board of 9 trustees chosen from city residents with reference to their fitness for such office. Not more than one member of the city council shall be at any one time a member of the library board. (Source: P.A. 84-770.)