The Boxcar Children (Ages 8+): vol. 11

Boxcar Children #11: Caboose Mystery

Plot

When the Aldens spend the summer riding on a train, they get to live in a train car once again - this time, they're staying in Caboose Number 777. The number is hard to forget, and indeed, the children meet people at each stop who seem to know it well. It turns out Caboose Number 777 has an unusual past - one that comes with its very own mystery!