75 ILCS 65/3
In case the directors, trustees or managers of any free public library, or a majority of them, shall make request in writing, of the corporate authorities of such city, park district or board of park commissioners for permission to erect a free public library building in or upon any public park, under the control, supervision or jurisdiction of such city, park district or board of park commissioners designating the site desired and the general style and approximate cost of such building, it shall be the duty of the clerk or secretary thereof to certify the resolution and proposition of granting such request to the proper election officials who shall submit the proposition at an election in accordance with the general election law; and if a majority of the legal voters, voting upon such question at any such election shall favor the granting by said city, park district or board of park commissioners of the aforesaid request, then the said authorities or board of park commissioners shall authorize the erection of said building, as aforesaid, and if necessary proceed to condemn, as aforesaid, any right, easement or interest, belonging to such abutting property owners, which would be interfered with by the erection of said library building, and such city or park district shall have the power to pay for any right, easement or interest so condemned out of its general revenues.
75 ILCS 65/3