Former President George H.W. Bush and former first lady Barbara Bush arrive for a ceremony to dedicate an expanded gallery at the National Museum of the Pacific War in 2002.AP
Former first ladies Barbara Bush, left, and Laura Bush, take part in the Enduring Legacies of Americaâs First Ladies conference Thursday, Nov. 15, 2012, in Austin, Texas.AP
President Barack Obama shares a laugh with former first lady Barbara Bush at the dedication of the George W. Bush presidential library in Dallas.AP
Republican presidential candidate, former Florida Gov. Jeb Bush, listens as his mother, former first lady Barbara speak during a 2016 campaign stop.AP
President George H.W.Bush waves as he and first lady Barbara Bush leave the White House in Washington, Nov. 5, 1992 for a weekend trip to Camp David, Maryland.AP
Former President Bush and his wife, Barbara, enjoy a tour of the new Barbara Bush Children's Hospital at Maine Medical Center Saturday, Sept. 19, 1998, in Portland, Maine.AP
President-elect George H.W. Bush, left, and his wife Barbara Bush wave goodbye from the steps of Air Force Two in West Palm Beach, Fla., in 1998.AP
President-elect George Bush and wife Barbara during a beach front news conference, Monday, Nov. 14, 1988 in Gulf Stream, Fla.AP
Former first lady Barbara Bush responds during an AP interview in her suite on Sept. 13, 1994 at the Waldorf Astoria Hotel in New York.AP
Former President George Bush and wife Barbara are shown in this image from a television monitor Monday, Jan. 22, 1996, in a campaign to sell season tickets for the Houston Astros.AP
Mrs. Barbara Bush, left, the wife of President-elect George Bush, sits with her daughter Dorothy Bush LeBlond, during the President-elect's news conference, Wednesday, Nov. 9, 1988AP
First Lady Barbara Bush gets some pointers from a few regulars at the Cranston, R.I., Senior Services Center, as she prepares to shoot a round of pool, June 14, 1989.AP
First Lady Barbara Bush, right, nudges Dottie Martin, wife of North Carolina Gov. Jim Martin, as the two share a laugh, Wednesday, Sept. 2, 1992, Raleigh, N.C.AP
First Lady Barbara Bush and Republican senatorial candidate Paul Coverdell shake hands with supporters who gathered to hear Mrs. Bush speak, Friday, Nov. 20, 1992, Roswell, Ga.AP
U. S. President George H. Bush, his wife Barbara, and their dogs ride a golf cart to their waiting helicopter as they leave Boca Grande, Fla., Sunday, Nov. 15, 1992.AP
President-elect George H. Bush waves to the Houston rally honoring him while surrounded by his family after his election to the nation's top office, Nov. 9, 1988.AP
First Lady Barbara Bush, right, at a Toys for Tots Christmas party at the Metropolitan Police Boys and Girls Club, Wednesday, Dec. 9, 1992, Washington, D.C.AP
President George Bush and his wife Barbara sit among 56,000 people to see opera stars perform during 'Encore!' The Three Tenors' in 1998.AP
Former first lady Barbara Bush speaks to a crowd of about 1,400 people in the rose garden of the Richard Nixon Presidential Library Friday, April 22, 1994.AP
Former first lady Barbara Bush is escorted through a row of honor guards with their swords drawn beforean award ceremony at the Valley Forge Military Academy Tuesday, May 7, 1996.AP
Barbara Bush holds up the children's book, "Amazing Grace," as she reads to the elementary students during the 1996 dedication ceremonies of Barbara Bush Elementary School.AP
President and Mrs. Bush walk with Millie across the South Lawn as they return to the White House in an Aug. 24, 1992, file photo.AP
First Lady Barbara Bush signs copies of "Millie's Book" as the Republican National Convention moved into its second day, Tuesday, Aug. 18, 1992, Houston, Tex.AP
Former First Lady Barbara Bush chats with news anchorwoman Barbara Walters during a photo session prior to an Evening of Readings on Monday, May 17, 1993 at Lincoln Center.AP
Former President Bush and former first lady Barbara Bush leave after voting in the Texas primary Tuesday, March 14, 2000 in Houston.AP
Former U.S. President George Bush, left, and Bavarian governor Edmund Stoiber, right, pose with their wives Barbara Bush and Karin Stoiber, second from right, for photographers.AP
Former President George Bush and his wife Barbara pose for photographers prior to AmeriCares Celebration of Hope, 20th Anniversary Gala in New York Tuesday, May 21, 2002.AP
Former first lady Barbara Bush talks with supporters after speaking at a rally to promote the Bush-Cheney agenda Monday, Oct. 25, 2004, in Strongsville, Ohio.AP
Former President George H. W. Bush, left, and his wife Barbara Bush listen to one of the eulogies praising longtime family friend and former congressman, G.V. "Sonny" Montgomery.AP
Former first lady Barbara Bush smiles during a light moment Thursday, Oct. 19, 2000, at the Fox Chase Cancer Center in Philadelphia while campaigning for her son.AP
Rep. Christopher Shays, R-Conn., gives former first lady Barbara Bush an impromptu kiss as she speaks at a fundraiser for him in Stamford, Conn., Tuesday, Sept. 12, 2006.AP
Former first lady Barbara Bush, right, quiets the crowd before speaking at a rally Wednesday, Oct. 18, 2000, in Southfield, Mich.AP
Former first lady Barbara Bush laughs with her son, Florida Gov. Jeb Bush, during a campaign stop in Ellenton, Fla., Monday, Oct. 30, 2000.AP
Former first lady Barbara Bush campaigns for her son, Texas Gov. George W. Bush Saturday Nov. 4, 2000 at Bishops Court Retirement Center in Green Bay, Wis. during a campaign stop.AP
Former President George Bush gives thumbs up after he and his wife, Barbara Bush voted on Wednesday, Nov. 2, 1994, in Houston.AP
Former President George H.W. Bush and his wife Barbara arrive at the Houston Astros baseball game against the Colorado Rockies on opening day Friday, April 6, 2012, in Houston.AP
In this Nov. 19, 1992 file photo, first lady Barbara Bush greets first lady-to-be Hillary Clinton upon her arrival at the White House in Washington.AP
Former first lady Barbara Bush listens to a patient's question during a visit to the Barbara Bush Children's Hospital at Maine Medical Center in Portland, Maine in 2013.AP
President Bush and first lady Laura Bush, right, walk with former President George H. W. Bush and former first lady Barbara Bush after attending Sunday service.AP
Elsie Hillman, left, accompanies television legend Fred Rogers, center, and former first lady Barbara Bush, right, at a gala fundraiser Thursday, Feb. 21, 2002, in Pittsburgh.AP
Former President George Bush, right, gives a thumbs up while he and his wife, Barbara, left, attend the Tennis Masters Cup tournament Tuesday, Nov. 16, 2004 in Houston.AP
Former president George H.W. Bush, center, and former first lady Barbara Bush, left, ring a bell for the Salvation Army Monday, Dec. 18, 2006, in Houston.AP
Barbara Bush, wife of U.S. Vice President George Bush, speaks December 1988.AP
In this Jan. 17, 2003 file photo, former first ladies get together for a group photo at a gala 20th anniversary fundraising event saluting Betty Ford and the Betty Ford Center.AP
Former U.S. President George Bush holds a garland next to his wife Barbara upon arrival at military airport in Bangkok Sunday, Dec. 10, 2006.AP
Vice President George H.W. Bush poses with wife Barbara by the White House Christmas tree, Dec., 1988.AP
First lady Barbara Bush is pictured campaigning for her husband, 1992.AP
Former first lady Barbara Bush throws out the ceremonial first pitch before Game 4 of the National League Championship Series in Houston, Sunday, Oct. 17, 2004.AP
Former First lady Barbara Bush chats with a person in attendance at the dedication ceremony of the George W. Bush childhood home in Midland, Texas, Tuesday, April 11, 2006.AP