Md. Code, Nat. Res. § 3-914
Bonds are hereby made securities in which all public officers and public bodies of the State of Maryland and its political subdivisions and all banks, trust companies, savings and loan associations, investment companies and others carrying on a banking business, all insurance companies and insurance associations and others carrying on an insurance business, all personal representatives, executors, administrators, guardians, trustees and other fiduciaries, and all other persons may legally and properly invest funds, including capital in their control or belonging to them. Such bonds are hereby made securities which may properly and legally be deposited with and received by a State or municipal officer or any agency or political subdivision of the State for any purpose for which the deposit of bonds or other obligations of the State is now or may hereafter be authorized by law.
Md. Code, NR § 3-914