Wyo. Stat. § 18-3-812
Each county treasurer shall pay the state treasurer all state taxes and other state monies received by him and shall give the state treasurer a written statement that he has paid over the same funds in kind as received by him and has not exchanged or bartered any of the monies, coin, bank bills, treasury notes or other currency received by him for the state for any auditor's warrants, state scrip or other certificates or evidences of indebtedness of the state, nor permitted the same to be done, and that all state auditor's warrants or other certificates or evidences of indebtedness of the state delivered by him to the treasurer, were received in payment of state taxes or other monies due the state. Each statement shall be sworn to before any person authorized to administer oaths and shall be filed and preserved in his office. False swearing in the statement is subject to the penalty provided by W.S. 6-5-303.
W.S. 18-3-812