The boxcar children．26，The mystery of the mixed-up zoo The Boxcar Children．26，The mystery of the mixed-up zoo / The boxcar children．36，The mystery of the purple pool The boxcar children．40，The mystery of the missing cat The boxcar children．39，The mystery of the hidden beach The boxcar children．31，The mystery of the Singing Ghost The Boxcar Children．81，The mystery of the midnight dog / The Boxcar Children．42，The mystery of the missing cat / The Boxcar children．89，The mystery of the star ruby / The boxcar children．35，The mystery of the Lost Village