The Diamond Cave Mystery

Chuck Bennett discovers from an old family bible that many years ago a man from Missouri cached his diamonds somewhere in the area of Carlsbad Caverns in New Mexico. When news gets out about the discovery, so-called descendants of the man are eager to question Chuck and his friend and make off with the loot. The boys manage to foil all of these would-be heirs and ultimately put their discovery to good use. The recurrent themes of the books in the Wilderness Mystery Series are natural phenomena—c