Where in any township, prior to the time this Act becomes effective, a majority of the votes cast at an election on the proposition to issue township library bonds were in favor of such proposition, and the ballots used and notice given of said election were in conformance with the applicable statutory requirements, each such bond issue is hereby validated and is legal and valid notwithstanding the fact that there was only one precinct and polling place for the purpose of that election, and the board of library directors of such township is hereby authorized to issue those bonds to a purchaser for value, and when such bonds are paid for, at not less than par and accrued interest, they shall be valid and binding obligations of such township.