Once upon a time television news was dominated by men like Walter Cronkite, Chet Huntley and David Brinkley. Some might call it an old boys club. Today, the sight of a woman in the anchor’s chair is commonplace. For this, we can thank Barbara Walters.

In 1976 she became the first female host of a network nightly news program – and it did not go well. She was shunned, ridiculed, glared at by her co-anchor and eventually replaced.

Instead of giving up, Walters transformed herself, becoming a legendary long-form interviewer. She talked to presidents, celebrities and, famously Monica Lewinsky.

Walters went on to host ABC’s “20/20″ for 25 years and “The View” for 17 more. She died two years ago at the age of 93.

Journalist Susan Page has long been fascinated by Walters, her drive to succeed, and how she changed our understanding of news. Page wrote about her in the new book, “The Rulebreaker: The Life and Times of Barbara Walters.”