Such bonds or notes may bear such date or dates, may bear interest at such rate or rates, payable semiannually, may mature at such time or times, may be in such form and denominations, carry such registration privileges, may be payable at such place or places, may be subject to such terms of redemption prior to maturity with or without premium, if so stated on the face thereof, and may contain such terms and covenants, including the establishment of reserves, all as may be provided by this chapter, section 76.17, and the resolution of the board authorizing the issuance of the bonds or notes. In addition to the estimated cost of construction, including site costs, the cost of the project may include interest upon the bonds or notes during construction and for six months after the estimated completion date, the compensation of a fiscal agent or adviser, engineering, architectural, administrative, and legal expenses and provision for contingencies. Such bonds or notes shall be executed by the president of the state board of regents and attested by the executive director, secretary, or other official thereof performing the duties of executive director, and the coupons thereto attached shall be executed with the original or facsimile signatures of said president, executive director, secretary, or other official; provided, however, that the facsimile signature of either of such officers executing such bonds may be imprinted on the face of the bonds in lieu of the manual signature of such officer, but at least one of the signatures appearing on the face of each bond shall be a manual signature. Any bonds or notes bearing the signatures of officers in office on the date of the signing thereof shall be valid and binding for all purposes, notwithstanding that before delivery thereof any or all such persons whose signatures appear thereon shall have ceased to be such officers. Each such bond or note shall state upon its face the name of the institution on behalf of which it is issued, that it is payable solely and only from hospital income received by such institution as provided in this chapter, and that it does not constitute a debt of or charge against the state of Iowa within the meaning or application of any constitutional or statutory limitation or provision. The issuance of such bonds or notes shall be recorded in the office of the treasurer of the institution, and a certificate by such treasurer to this effect shall be printed on the back of each such bond or note.