The real property acquired under section 450ll of this title shall constitute the Booker T. Washington National Monument and shall be a public national memorial to Booker T. Washington, noted Negro educator and apostle of good will. The Secretary of the Interior shall have the supervision, management, and control of such national monument, and shall maintain and preserve it in a suitable and enduring manner which, in his judgment, will provide for the benefit and enjoyment of the people of the United States.