FILE - In this April 5, 2013 file photo, the exterior of the George W. Bush Presidential Center is seen, in Dallas. Former first lady Laura Bush wanted to make sure that the George W. Bush Presidential Center reflected her and her husbandÃs Texas roots. And it does, right down to the foundation that includes limestone from the Midland area where they grew up and lived when they were first married. The about 226,000-square-foot center, home to the George W. Bush Presidential Library and Museum along with the 43rd president's policy institute, will be dedicated Thursday, April 25, 2013, on the campus of Southern Methodist University, which is not far from the Bushes' Dallas home and is also where Laura Bush earned her bachelor's degree in education. The library opens to the public on May 1.(AP Photo/Kim Johnson Flodin)