Thirty years ago this month, readers were first introduced to the founding members of The Baby-sitters Club: Kristy, Claudia, Mary Anne, and Stacey. With nearly 250 titles in print, and new graphic novel adaptations by Raina Telgemeier, The Baby-sitters Club remains one of the most beloved series of all time. In this episode, we talk with BSC creator Ann M. Martin and her longtime editor, David Levithan, about the groundbreaking series and its loyal following.