The commission, in addition to the funds which may be received from the sale of tunnel revenue bonds and from the collection of tolls and other tunnel revenues derived under the provisions of this chapter, shall have authority to receive and accept contributions of either money or property or other things of value, to be held, used, and applied for the purposes in this chapter provided, and shall also have authority to receive and accept any grant which may be made by the federal emergency administrator of public works or other federal agency.