The lands hereafter described, to wit: The southwest quarter of the northwest quarter, section 25, and the southeast quarter of the northeast quarter, section 26, township 29 north, range 3 east, Mount Diablo meridian, in the State of California, are added to and made a part of the Lassen Volcanic National Park for use as an administrative headquarters site.
16 USC § 205
Additional lands for administrative headquarters site
through Pub. L. 116-344, except Pub. Ls. 116-260 and 116-283