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

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