Only on the "CBS This Morning" podcast, co-host Gayle King talks with USA Today's Washington Bureau Chief Susan Page about the life and legacy of the former First Lady. They discuss her traditional marriage with former President George H. W. Bush and how it evolved over time. Page, who wrote "The Matriarch: Barbara Bush and the Making of an American Dynasty," shares what she learned from gaining access to Bush's personal diaries and from her five sit-down interviews. Page reveals Bush's battle with depression, getting through the death of your young daughter and the empathy it gave her during the AIDS crisis, and her relationship with fellow First Lady Nancy Reagan.