Subject to the approval of the Board of Public Works, the Authority may: borrow money from any source for any corporate purpose, including working capital for its operations, reserve funds, or interest; mortgage, pledge, or otherwise encumber the property or funds of the Authority; contract for the services of any person in connection with any financing, including financial institutions, issuers of letters of credit, or insurers; and receive and accept from any public or private source contributions, gifts, or grants of money or property and invest the money or property as a whole or in part.