Andrea Wulf: "The Brother Gardeners" (Knopf) (Rebroadcast) How a colonial American farmer with a passion for plants and a group of eighteenth century explorers, botanists, and collectors triggered the English obsession with gardens and gardening.
Annette Gordon-Reed: "The Hemingses of Monticello" (Norton) (Rebroadcast) A decade ago, DNA evidence corroborated Annette Gordon-Reed's controversial assertion that Thomas Jefferson fathered children with his slave Sally Hemings. Her latest book won the National Book Award and gives the most comprehensive account to date of an American slave family, and their life at Monticello and in Paris.