For any such purpose, the town board or the board of county commissioners, at any time or from time to time, in the name and on the behalf of the town, may issue:
1. General obligations, payable from taxes;
2. General obligations, payable from taxes, which payment is additionally secured by a pledge of gross or net revenues derived from the operation of such capital improvements, and, if so determined by the town board or the board of county commissioners, further secured by a pledge of such other gross or net revenues as may be derived from any other income-producing project of the town or from any license or other excise taxes levied by the town for revenue, as may be legally made available for their payment; and
3. Special obligations.