Gold robbery and mine mystery

THE MYSTERY OF BLUE MINES

Kris Anderson

THE MISSING COINS

John Escott

The secret of the lost tunnel

Franklin W Dixon

The missing money mystery

Carolyn Keene

The Missing Coins

John Escott

The Mysterious Caravan

Franklin W Dixon

Hunting for hidden gold

Franklin W Dixon

The mystery of the chinese junk

Franklin W Dixon

Mystery at devil's paw

Franklin W Dixon

Mystery at the Spanish Castle

Ruth Nulton Moore

STORIES OF DETECTION AND MYSTERY

Detective

ARTHUR HAILEY

The mystery of the chinese junk

Franklin W Dixon

The thieves of Faith

Richard Doetsch