Wyo. Stat. § 15-7-103
A city or town may borrow money and issue coupon bonds in an amount which, together with the municipal indebtedness, but not including sewerage, water supply and school bonds, does not exceed four percent (4%) of the assessed valuation of the city or town to acquire, lease, purchase, equip, construct, develop, improve or enlarge public recreational facilities. The bonds shall be in the denomination of one hundred dollars ($100.00), or multiples thereof and bear interest payable semiannually at a rate, at a place and in the manner the governing body provides. The bonds shall be in a serial form with last maturity not more than twenty (20) years after the date of issue and are redeemable at the option of the city or town at a time to be designated by the governing body as provided in W.S. 16-5-302.
W.S. 15-7-103