Title: The Mystery of the Lost Mine
Description: On a camping trip to Arizona with their grandfather, the Alden children search for a lost gold mine.
Subjects: Fiction, Gold mines and mining, Detective and mystery stories, Brothers and sisters, Mystery and detective stories, Orphans, Boxcar children (Fictitious characters), Juvenile fiction, Children's fiction, Boxcar children (fictitious characters), fiction, Orphans, fiction, Family life, fiction, series:BoxcarChildren, collectionID:Boxcar3, Arizona, fiction, Siblings, fiction, Gold mines and mining, fiction
Places: Arizona