Sec. 13. All:
(1) banks;
(2) bankers;
(3) trust companies;
(4) savings banks and institutions;
(5) building and loan associations;
(6) saving and loan associations;
(7) investment companies;
(8) insurance companies and associations; and
(9) executors, administrators, guardians, trustees, and other fiduciaries;
may legally invest any sinking funds, money, or other funds that belong to them or are within their control in any bonds or notes issued under this chapter.