THE MYSTERY OF BLUE MINES

ROCKS AND MINERALS

Blue Moon valley

Stephen Rabley

ADVENTURE STORY

L.G. Alexander

Adventure on the island

William Murray

BLUE MINES

Kris Anderson

BLUE HEAVEN

ELAINE KAGAN

The Mystery in the Snow

Gertrude Chandler Warner

JULIE CHAN IS MISSING

Kris Anderson

Hunting for hidden gold

Franklin W Dixon

The mysterious island

Jules Verne

Mystery of the disappearing dogs

Barbara Brenner

Mystery at the Spanish Castle

Ruth Nulton Moore

STORIES OF DETECTION AND MYSTERY

Surf, sand, and secrets

Nancy Butcher

Gold robbery and mine mystery

Richard Musman

What a place to hide!

Jennifer Courtney

The mystery of the chinese junk

Franklin W Dixon

The mystery of the chinese junk

Franklin W Dixon

THE MISSING COINS

John Escott