H.R. 37, to Amend the National Trails System Act to Update the Feasibility and Suitability Studies of Four National Historic Trails and Provide for Possible Additions to Such Trails; H.R. 640, to Adjust the Boundaries of Santa Monica Mountains National Recreation Area, and for Other Purposes; and H.R. 1000, to Adjust the Boundary of the William Howard Taft National Historic Site in the State of Ohio, to Authorize an Exchange of Land in Connection with the Historic Site, and for Other Purposes.