The state board of land commissioners is authorized to exchange any lands, the income from which is devoted to the public schools of the state, the state universities, the state agricultural college, penitentiary, internal improvements, or saline or any other lands which may be under the control of the state board of land commissioners and which may have been granted to the state by the congress of the United States, for such unappropriated federal lands in the state as the state board of land commissioners may select. The director of said board is empowered to sign all papers necessary to such transfer, under the direction of the board.
C.R.S. § 36-1-141