The ghost town mystery the Boxcar Children series, book 71 (Boxcar children mysteries 71.)
by Warner, Gertrude Chandler, 1890-1979.
Series
Summary
Grandfather has just bought a plot of land in the Rocky Mountains -- complete with a ghost town! When the Aldens hear their land is haunted, they don't believe it. But when they see a ghostly figure on the main street, they know something's up. There's a mystery here and the Aldens are determined to... Full description