_by Capwell Wyckoff_
Don and Jim Mercer were prepared to spend a dull vacation at home when
Professor Scott invited them to Lower California and a search for
Spanish treasure. But their adventure was not all fun, for Don, Jim, and
their friend Terry Mackson soon found themselves involved with a band of
ruthless men determined to salvage the treasure for themselves and to
stop at nothing to do it. Don and Jim fought for their lives in a series
of startling adventures which make this story of buried treasure an
absorbing and exciting tale.