70 ILCS 1295/1
Every board of public park commissioners desiring to select or secure land or lands as a site for an armory for the use of the National Guard or for the purpose of establishing and maintaining a landing field for air craft is hereby authorized to set apart a portion of its own lands or to acquire real estate for such a site or for the purpose of establishing a landing field for air craft, and to provide for the maintenance and operation of such a landing field; provided that such field shall always be subject to such regulations as such park board shall make applicable thereto, and all ordinances passed by said board in relation to the government of parks under its control; and provided, further, that said field shall not be used for the storage, parking, repairing or replenishing of air craft.
70 ILCS 1295/1