George W. Bush Presidential Center

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Docent Patricia Flynn demonstrates an interactive with information about conflicts in Afghanistan and Iraq during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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A lion presented to President George W. Bush by Tanzanian President Jakaya Kikwete during Bush's trip to Africa in 2008 is seen on display at the George W. Bush Presidential Center Wednesday, 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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Former President George W. Bush, left, and center architect Robert A.M. Stern pause for a photo before the signing ceremony for the joint use agreement between the National Archive and the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. Bush and his wife, Laura, attended Wednesday's ceremony in Dallas the day before the official dedication of the George W. Bush Presidential Center. The George W. Bush Foundation raised the money to build the center. The foundation donated the library and museum portion of the center to the National Archives, which provides access to presidential records, documents, historical materials and artifacts over time. (AP Photo/David J. Phillip)

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Former first lady Laura Bush and Alan Lowe, director of the library and museum enter a replica of the White House rose garden during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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A replica of the Oval Office is seen during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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Cowboy boots commemorating the time George W. Bush served as general managing partner for the Texas Rangers, are seen during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1.(AP Photo/David J. Phillip)

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Former President George W. Bush's baseball collection is seen on display during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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Busts of presidential pets Barney and Miss Beazley are seen during a tour of the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. More than 8,000 people are expected to attend the invitation-only dedication of the center, Thursday, April 25, which will house the presidential library and museum along with the 43rd presidentÃs policy institute. It opens to the public on May 1. (AP Photo/David J. Phillip)

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Former President George W. Bush participates in a signing ceremony for the joint use agreement between the National Archive and the George W. Bush Presidential Center Wednesday, April 24, 2013, in Dallas. Bush and his wife, Laura, attended Wednesday's ceremony in Dallas the day before the official dedication of the George W. Bush Presidential Center. The George W. Bush Foundation raised the money to build the center. The foundation donated the library and museum portion of the center to the National Archives, which provides access to presidential records, documents, historical materials and artifacts over time. (AP Photo/David J. Phillip)

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The George W. Bush Presidential Center in Dallas, showing the monumental main entrance of the 17-acre site.

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Former President George W. Bush and his wife, Laura, will dedicate the George W. Bush Presidential Center, complete with rose garden, in Dallas on Thursday. President Obama will be among the guests.

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Former first lady Laura Bush talks with landscape architect Herb Sweeney (right) and Mark Langdale, president of the George W. Bush Foundation, during a tour of the Texas interpretation of the White House Rose Garden at the George W. Bush Presidential Center in Dallas, which will open in late April. (Associated Press)