Title: Montague Island Mysteries and Other Logic Puzzles, Author: R. Wayne Schmittberger
Title: Return to Montague Island: More Mysteries and Logic Puzzles, Author: R. Wayne Schmittberger
Title: Montague Island Memoirs: All-New Mysteries and Logic Puzzles, Author: R. Wayne Schmittberger
Title: Beyond Montague Island: Even More Mysteries and Logic Puzzles, Author: R. Wayne Schmittberger