Wyo. Stat. § 41-10-141
The district may provide for the payment of all necessary preliminary expenses actually incurred in the making of surveys, estimates of costs and revenues, the employment of engineers, architects, fiscal agents, attorneys-at-law, clerical help, other agents or employees, the making of notices, taking of options, and all other expenses necessary or desirable to be made and paid prior to the authorization for or the issuance of such bonds; provided, no such expenditures shall be made or paid unless an appropriation has been budgeted and made therefor in the same manner as is required by law, or unless the proceeds of bonds or other moneys are available to defray such expenses. Any funds so expended by the district for preliminary expenses incurred in connection with the same purpose as that for which bonds are issued may be fully reimbursed and repaid to the district out of the proceeds derived from the sale of such bonds. The amount so advanced by the district to pay such preliminary expenses may by a resolution authorizing the issuance of such bonds be made a first charge against such bond proceeds until the same has been repaid as herein provided, and in such event said amount shall be paid therewith before any other disbursements are made therefrom.
W.S. 41-10-141