by Capwell Wyckoff

When Don and Jim Mercer and their buddy Terry Mackson set out in their sloop, Lassie, for a visit to Mystery Island, they were in search of adventure and fun. But they quickly found they were getting more than they bargained for—real danger, a skirmish with marine bandits, and a fight for their lives. This is a thrilling adventure story of three modern boys—with action and excitement on every page.

THE MERCER BOYS AT WOODCREST

by Capwell Wyckoff

The mystery of Clanhammer Hall, at Woodcrest Military Academy, interested Don and Jim Mercer and their friend Terry Mackson from the moment of their arrival at Woodcrest. But their curiosity about the old, empty building faded into the back of their minds as they became involved in the mysterious disappearance of their headmaster, Colonel Morrell, whom they had never seen. With initiative and ingenuity the Mercer boys, aided by Cadet Vench, did a little detective work and uncovered a fantastic story of crime.

THE MERCER BOYS’ MYSTERY CASE

by Capwell Wyckoff

When Cadets Don and Jim Mercer and their friend Terry Mackson were ordered by Colonel Morrell of Woodcrest Military Academy to gather together all the school trophies, they were able to find all except one—the cup awarded to the class of 1933. What had happened to the cup was a mystery the boys were determined to solve. And little by little Don and Jim uncovered a strange story and unraveled a mystery that had puzzled school authorities for years. The Mercer boys uphold the honor of Woodcrest against a conspiracy of silence and dishonor.

THE MERCER BOYS ON A TREASURE HUNT

by Capwell Wyckoff