Section 75 ILCS 16/35-20 - Status of taxes; multiple counties; annexation(a) The library taxes provided for in this Act shall be in addition to all other taxes or tax rates authorized to be levied by the district or any other taxing authority lying wholly or partially within the district and they shall not be a part of the taxes making up any rate prescribed as a limitation on the amount of taxes the other taxing authority or the district may levy or collect, except that no library district tax for library purposes shall be levied within the district by any other taxing authority.(b) Where the corporate limits of any library district lie partly in 2 or more counties, the board shall ascertain the total amount of all taxable property lying within each county, as the property is assessed or equalized by the Department of Revenue for the current year, and shall certify the amount of taxable property in each county within the library district to the county clerk of each county affected. Each county clerk shall then ascertain the rate (expressed as a percentage) that, upon the total valuation of all property subject to taxation within that library district ascertained as provided in this Section, will produce a net amount not less than the total amount directed to be levied by the library district. The county clerk shall then certify the rate under his or her signature and seal and shall extend the library tax to be levied upon the books of the collector of taxes for his or her county against all taxable property in his or her county within the limits of the library district.(c) Where the corporate limits of an existing library district are expanded by an annexation, the added or annexed territory shall be subject to the library taxes provided for in this Act to the same extent as territory within the district before the annexation.