The Commissioner of Conservation and Natural Resources is hereby expressly authorized and empowered to have complete management of, and supervision over lands which are known as school lands, as defined by Section 16-20-1, which lands are vested in or which may hereafter be vested in the State of Alabama in trust for the use of schools, lands which are known as swamp and overflowed lands, which are now or which may hereafter be owned by the State of Alabama, the Salt Springs Lands reservation and any lands that may have been or may be deeded to the Department of Conservation and Natural Resources by the Director of the Department of Revenue and of all papers, documents and records relating thereto, except those which are required by law to be kept in the office of the Secretary of State.