Handbook of Treasure Signs and Symbols

Turtles Lead to Treasure: A Guide to Spanish Trail Monuments

Reading Treasure Map Signs and Symbols: Expanded Edition With More Symbols and Meanings

Treasure Signs & Symbols

Treasure Signs, Symbols, Shadow and Sun Signs

Spanish Monuments and Trailmarkers to Treasure in the United States

Commander's Cacheology Encyclopedia of Treasure Symbols: Ancient Symbols: Detailed and Decoded leading to Lost Treasures

Death Traps to Treasure: Spanish and Mexican Mine Traps, Warning Signs and Symbols

How to Research for Treasure Hunting and Metal Detecting: From Lead Generation to Vetting

Buried Treasures You Can Find: Over 7500 Locations in All 50 States (Treasure Hunting Text)

The Rocks Begin to Speak