Wyo. Stat. § 41-9-503
The commissioners may secure the indebtedness incurred by the district in such contract as provided for in W.S. 41-9-502, by issuing bonds of the district in such form, terms and denominations as may be fixed by the secretary of the interior in carrying out the provisions of any act of congress heretofore or hereafter enacted providing for or permitting such a contract on the part of the United States and the acceptance and deposit or sale of bonds of the district by the United States; said bonds may be delivered to the United States and held by it or, when deemed desirable or when the appraised value of the land in the district is double the bonded indebtedness, sold by the United States, and the net proceeds received from the sale of said bonds applied to the liquidation of the contract indebtedness of the district to the United States.
W.S. 41-9-503