Miss. Code Ann. § 17-3-1: Miss. Code Ann. § 17-3-1

The board of supervisors of any county in Mississippi, and the mayor and board of aldermen or board of commissioners of any municipality in the State of Mississippi, may in their discretion, set aside, appropriate and expend moneys, not to exceed one mill of their respective valuation and assessment for the purpose of advertising and bringing into favorable notice the opportunities, possibilities and resources of such municipality or county.