Jan Pottker is the author of seven previous books, including Janet and Jackie: The Story of a Mother and Her Daughter, Jacqueline Kennedy Onassis. Pottker's interest in Sara and Eleanor was sparked when she realized that a myth had grown around Eleanor at the expense of Sara---much the same as the relationship between Jackie and her mother had been underplayed and distorted over time. Pottker has a Ph.D. from Columbia University and lives in Potomac, Maryland, with her husband, Andrew S. Fishel.