; (2) by striking Wood River, Illinois, and inserting the Ohio River in Pittsburgh, Pennsylvania, ; and (3) by striking maps identified as, Vicinity Map, Lewis and Clark Trail study report dated April 1977. and inserting the map entitled Lewis and Clark National Historic Trail Authorized Trail Including Proposed Eastern Legacy Extension , dated April 2018, and numbered 648/143721. . (b) Effective Date The amendments made by subsection (a) shall take effect on the date that is 60 days after the date of enactment of this Act. 2503. American Discovery Trail signage (a) Definitions In this section: (1) Secretary concerned The term Secretary concerned means— (A) the Secretary, with respect to Federal land under the jurisdiction of the Secretary