The bonds and notes of the authority are hereby made securities in which all insurance companies and associations and other persons carrying on insurance business, all banks, bank and trust companies, trust companies, private banks, savings banks, savings and loan associations, building and loan associations, investment companies and other persons carrying on a banking business, all administrators, guardians, executors, trustees and other fiduciaries, and all other persons whatsoever who are now or may hereafter be authorized to invest in bonds or other obligations of the state may properly and legally invest funds including capital in their control or belonging to them.