(5 ILCS 490/75) (from Ch. 1, par. 3051-75)
Sec. 75. Prairie Week. The third full week of September is designated as Illinois Prairie Week to be observed throughout the State as a week for holding appropriate events and observances in the public schools and elsewhere to demonstrate the value of preserving and reestablishing native Illinois prairies.
(Source: P.A. 87-272.)