In her biography of the first lady, "The Triumph of Nancy Reagan," Washington Post columnist Karen Tumulty examines the complicated persona of the woman who had the most significant influence on President Ronald Reagan. https://cbsn.ws/3scrsvm | CBS Sunday Morning

Former first lady Nancy Reagan's casket arrives at the Ronald Reagan Library in Simi Valley, CA, where she will lay in repose until her funeral on Friday. Read more about her life and legacy: http://nbcnews.to/1TYH964 | NBC News

Nancy Reagan’s casket arrived at the Ronald Reagan Presidential Library in Simi Valley Wednesday morning. Now three days of formal mourning and solemn ceremonies, which include a public viewing, for the former first lady are underway. Family and friends of Mrs. Reagan gathered for a small ceremony Wednesday (3/9) morning in Santa Monica, California. Eight Secret Service agents who served the Reagans acted as pallbearers when her body was taken from the Santa Monica funeral home. | WTVR CBS 6 New

In this week's Monday Minute, we take a look at a hand written letter President Reagan wrote his wife, Nancy Reagan. Ronald Reagan wrote love notes to his wife throughout their entire life, many of which are printed in Mrs. Reagan’s book, “I love you, Ronnie.” | The Ronald Reagan Presidential Foundation and Institute