Baby-Sitters Club Boxed Set #6 By (author): "Ann M. Martin"Genres:Childrens books Kids books ISBN0590637037ISBN139780590637039AsinBaby-Sitters Club Boxed Set #6SeriesThe Baby-Sitters Club #21-2421. Mallory and the Trouble With Twins22. Jessi Ramsey, Pet-sitter23. Dawn on the Coast24. Kristy and the Mother's Day Surprise