Wyo. Stat. Ann. § 15-7-207

If the governing body of the city or town decides to submit the question of the sale of the property to a vote of the qualified electors, they shall publish, for a period of at least three (3) weeks before the election in a newspaper of general circulation in the city or town, a notice specifying the amount of the bid and the general terms and conditions contained in the proposal. A copy of the notice shall be posted for three (3) weeks immediately preceding the election in three (3) public places in the city or town.