General obligation bonds; payment and security.

Except as may otherwise be provided by the council, every issue of its bonds is a general obligation of the council payable solely out of any revenue or money of the council, subject only to any agreements with the holders of particular bonds pledging any particular money or revenue. The bonds may be additionally secured by a pledge of any grant, contribution or guarantee from the federal government or any corporation, association, institution or person or a pledge of any money, income or revenue of the council from any source.