Section 182.717 - Bonds issued by district, limitation, purposes, rate - approval by voters required - form and content - sale - amount of bond1. The board of trustees of an urban public library district may provide for the purchase of ground and for the erection of public library buildings, and for the improvement of existing buildings, and for the furnishing of the buildings and may provide for the payment of the same by the issue of bonds or otherwise, subject to the conditions and limitations set forth in this section.2. No bonds of the public library district shall be issued in an amount in excess of the constitutional limitations of the value of taxable, tangible property in an urban public library district, as shown by the last completed assessment for state and county purposes, nor shall such indebtedness be incurred unless it has been approved by the vote of the constitutionally required percentage of the voters of an urban public library district voting on the question at an election. The ballot for approval shall state in boldfaced type the tax rate necessary to retire the bonds as nearly accurate as may be.3. The board of trustees shall provide for the collection of an annual tax on all taxable, tangible property in an urban public library district sufficient to pay the interest and principal of the indebtedness as they shall fall due and to retire the same within twenty years from the date contracted.4. If, upon the returns from the election, which shall be certified to the board of trustees, it appears that the question to incur indebtedness has been assented to by the constitutionally required percentage of the voters voting on the question, the board of trustees shall enter of record a brief recital of the returns and shall declare that the urban public library district board of trustees may issue bonds of the urban public library district in a total amount not in excess of that authorized by the voters. The board of trustees shall offer such bonds at public sale and shall provide such method as it may deem necessary for the advertisement of the sale of each issue of said bonds before the same are sold. The bonds shall be issued, payable to bearer and in denominations of not less than one hundred dollars, or some multiple thereof, payable in not more than twenty years from the date they bear, bearing interest from date at a rate not exceeding the rate allowable by law, payable semiannually, and with interest coupons attached to conform to the fact thereof. All bonds shall be signed by the president of the board of trustees, attested by the signature of the treasurer, and each bond shall have impressed thereon the corporate seal of the urban public library district.