executed in connection with the sale by the Government, or any agency or official thereof, of any housing acquired or constructed under Public Law 849, Seventy-sixth Congress, as amended; Public Law 781, Seventy-sixth Congress, as amended; or Public Laws 9, 73, or 353, Seventy-seventh Congress, as amended (including any property acquired, held, or constructed in connection with such housing or to serve the inhabitants thereof); or