RSA 203:16 As Legal Investment and Security for Deposits.

The state and all public officers, municipal corporations, political subdivisions, and public bodies, all banks, bankers, trust companies, savings banks and institutions, investment companies, insurance companies, insurance associations and other persons carrying on a banking or insurance business, and all executors, administrators, guardians, trustees and other fiduciaries may legally invest any sinking funds, money or other funds belonging to them or within their control in any bonds or other obligations issued by a housing authority created by or pursuant to the housing authorities law and any acts amendatory or supplemental thereto or issued by any public housing authority or agency in the United States, when such bonds or any other obligations are secured by a pledge of annual contri