42 books • 6 series
Book #6: Eustacia Goes to the Chalet School
Book #7: Chalet School and Jo
Book #9: Exploits of the Chalet Girls
Book #10: The Chalet School and the Lintons
Book #12: Jo Returns to the Chalet School
Book #2: The Condor Crags Adventure
Book #5: Top Secret
Book #1: The Geography Readers Volume 1
Book #1: Gerry Goes To School
Book #5: Heather Leaves School
Book #6: Janie of La Rochelle
Book #7: Janie Steps In
Book #2: Stepsisters for Lorna
Book #1: Lorna at Wynyards