Functions of Secretary of the Interior under this section and section 485 of this title, with respect to exchanges of non-Federal lands for national forest lands or timber, transferred to Secretary of Agriculture, see Pub. L. 86–509,
Act June 25, 1935, ch. 308, 49 Stat. 422, provided that this section should be extended and made applicable to exchanges of lands under acts Feb. 14, 1923, ch. 75, 42 Stat. 1245, and Feb. 7, 1929, ch. 160, 45 Stat. 1154, which authorize the United States to acquire privately owned lands situated within certain townships in the Lincoln National Forest in the State of New Mexico, by exchanging therefor an equal value of unreserved and unappropriated public lands within said State.