Barbara Sinatra photos through the years

Nelda Linsk, Tony Capps and Barbara Sinatra pose to publicize a local golf tournament.

Barbara Sinatra presents her husband with a 70th birthday cake at a groundbreaking ceremony for the Barbara Sinatra Children's Center in 1985.

Barbara Sinatra presents Barbara Sinatra Children's Center benefactor, the late Ambassador Walter Annenberg, with a token of appreciation.

Frank and Barbara Sinatra in front of El Mirador tower on the grounds of what is now Desert Regional Medical Center.

Frank and Barbara Sinatra attending the wedding of Susan Ford and Charles Vance at St. Margaret's Episcopal Church in Palm Desert, circa 1989.

Barbara Sinatra at the Barbara Sinatra Children's Center in Rancho Mirage.

L to R: Mrs. Roger Moore, Judy and former Vice President Spiro Agnew, Barbara Sinatra

Barbara Sinatra receives a $15,000 check from Ken Rizotto for the Barbara Sinatra Children's Center.

L to R: Mrs. Mary Anne Wallentine, Barbara Sinatra, Mrs. Melody Dolan, Karen Franich Lurkman

File photo of Barbara Sinatra.

Barbara Sinatra at the El Dorado Polo Club in Indio on March 25, 2007.

Barbara Sinatra with Nelda Linsk at the Frank Sinatra Celebrity Golf Tournament Gala in Indian Wells.

The late Ambassador Leonard Firestone accompanies Frank and Barbara Sinatra as they leave the Susan Ford-Charles Vance wedding at St. Margaret's Episcopal Church in Palm Desert in 1979.

Frank and Barbara Sinatra arrive at a Frank Sinatra Celebrity Invitational Gala in the early 1990s.

From left, Nelda Linsk, Raphael Sanchez, Barbara Sinatra, Rosemarie Troy and Carlo Goetschel.

Barbara Sinatra at the Barbara Sinatra Children's Center, Monday, February 25th, 2013.

Barbara Sinatra visiting the Barbara Sinatra Children's Center at Eisenhower on Friday, January 17, 2014 in Rancho Mirage, Calif.

Entertainer Wayne Newton, supermodel Beverly Johnson and Barbara Sinatra.

Barbara Sinatra and Elke Sommer.

Barbara Sinatra was honored by the Rancho Mirage Chamber of commerce.

Michael Phelps and son Boomer talk with Barbara Sinatra at the Champions Honor Luncheon in Rancho Mirage, March 3, 2017.

Frank and Barbara Sinatra are seen arriving at a Frank Sinatra Celebrity Invitational Gala in the early 1990s.

(L to R) Barbara Sinatra, Joe Mantegna and Tom Dreesen.

Jill St. John, Robert Wagner and Barbara Sinatra attend a Frank Sinatra Celebrity Invitational golf gala.

Hank Aaron and Bud Selig with Barbara Sinatra.

Actor Frank Sinatra, center, poses with his family during an awards presentation, from left, daughter Nancy Sinatra, son Frank Sinatra Jr., Barbara Sinatra, mother Dolly Sinatra, and daughter Tina Sinatra in Los Angeles on November 19, 1976.

Barbara Sinatra is the author of "Lady Blue Eyes -- My Life with Frank."