Nancy Davis Reagan | 1921 - 2016

In this June 5, 2014, file photo, former first lady Nancy Reagan visits the grave site of her husband, President Ronald Reagan, at the Ronald Reagan Presidential Library, in Simi Valley, Calif.  (Mark J. Terrill / AP)

This file photo taken on June 02, 2009 shows former first lady Nancy Reagan at the unveiling of a statue of her husband, President Ronald Reagan, in Washington, DC.  (KAREN BLEIER / AFP/Getty Images)

This December 1986, file photo shows first lady Nancy Reagan holding the Reagans’ pet Rex, a King Charles spaniel, as she and President Reagan walk on the White House South lawn.  (Dennis Cook / AP)

This file photo taken on November 9, 1985 shows (L-R) US President Ronald Reagan and US First Lady Nancy Reagan welcoming to the White House Princess Diana and her husband Prince Charles.  (DON RYPKA / AFP/Getty Images)

President Reagan and First Lady Nancy Reagan at a New Orleans luncheon in August 1988.  (Mike Sargent / AFP/Getty Images)

Nancy Reagan holds Chinese leader Deng Xiaoping’s hand during a 1984 visit to Beijing. The first lady took an active role in advising President Reagan on policy matters.  (Scott Stewart / Associated Press)

American actor and future president Ronald Reagan (1911 - 2004) sits with his wife, actress Nancy Reagan, as the par talk with fellow actor and future US Senator George Murphy (1902 - 1992) at the premiere of ‘High Society,’ July 1956. (Photo by Pictorial Parade/Getty Images)  (Pictorial Parade / Getty Images)

Nancy Reagan poses with the 2008 Republican presidential candidates after their May 2007 debate at the Reagan Presidential Library in Simi Valley.  (Robert A. Reeder / Associated Press)

Nancy Reagan with stepdaughter Maureen at the 2000 Republican National Convention in Philadelphia, a year before Maureen’s death from skin cancer.  (Hillery Garrison Smith / Associated Press)

FILE - In this June 2, 2009, file photo, President Barack Obama escorts former first lady Nancy Reagan after signing the Ronald Reagan Centennial Commission Act, during a ceremony in the Diplomatic Reception Room of the White House in Washington. The former first lady has died at 94, The Associated Press confirmed Sunday, March 6, 2016. (AP Photo/Haraz N. Ghanbari, File)  (Haraz N. Ghanbari / AP)

Nancy and Ronald Reagan, with running mate George H.W. Bush and his wife, Barbara, are cheered by delegates at the Republican National Convention in July 1980. “Reagan knew where he wanted to go, but she had a better sense of what he needed to do to get there,” biographer Lou Cannon said of Nancy Reagan.  (Joe Kennedy / Los Angeles Times)

The Reagans attend a 1980 reception in their honor in Los Angeles with Los Angeles Times Publisher Otis Chandler and his mother, Dorothy.  (Lennox McClendon / Associated Press)

The Reagans walk through Normandy American Cemetery above Omaha Beach in northern France on June 6, 1984, the 40th anniversary of the D-day invasion.  (Bob Daugherty / Associated Press)

The former president and first lady arrive for the premiere of Andrew Lloyd Webber’s “Sunset Boulevard” in Los Angeles in December 1993.  (Chris Martinez / Associated Press)

The Reagans prepare to return to Washington from Point Mugu Naval Air Station after a Memorial Day vacation in California in 1981.  (Joe Kennedy / Los Angeles Times)

The Reagans with music legend Ray Charles at a musical salute in Washington in March 1983.  (Ira Schwartz / Associated Press)

The president and first lady visit the terra cotta soldiers archeological site during their 1984 China trip.  (Bob Daugherty / Associated Press)

Nancy Reagan with President George W. Bush in 2005 at an Air Force One exhibit at the Ronald Reagan Presidential Library in Simi Valley.  (Brian van der Brug / Los Angeles Times)

Gov. Arnold Schwarzenegger and his wife, Maria Shriver, with Nancy Reagan at a ceremony commemorating the 40th anniversary of Ronald Reagan’s first gubernatorial win.  (Anne Cusack / Los Angeles Times)

The First Lady’s in front of the Red Dress display. First Lady Laura Bush and former First Lady Nancy Reagan participated in the Heart Truth Roundtable at the Reagan Library in Simi Valley on Wednesday, February 28, 2007. Later they visited students at Balboa Magnet School in Northridge who are part of a National Park Service program.  (Stephen Osman / Los Angeles Times)

Nancy Reagan after a GOP presidential debate at the Reagan Presidential Library.  (Paul Buck / EPA)

Vice President Dick Cheney escorts the former first lady at a white-tie dinner for Britain’s Queen Elizabeth II at the White House in May 2007.  (Pool / Getty Images)

In May 2007, Nancy Reagan holds a copy of the newly released “Reagan Diaries,” which chronicles her husband’s two terms in the White House.  (Stephen Osman / Los Angeles Times)

Nancy Reagan is joined by California Gov. Arnold Schwarzenegger and Assemblyman Martin Garrick (R-Carlsbad), left, at a signing ceremony for two bills honoring her late husband at the Reagan library in Simi Valley.  (Al Seib / Los Angeles Times)

Nancy Reagan is helped by Marine Lt. Gen. George J. Flynn as she arrives for a wreath-laying ceremony at her husband’s memorial at the Reagan Presidential Library in Simi Valley.  (Wally Skalij / Los Angeles Times)