The Then and Now map sets are a fantastic addition to any prospecting & rockhounding referrence library. Oregon Gold/Silver & Gems, Then & Now includes a USGS map of Oregon as well as historical maps showing the location of gold and gem deposits throughout the state. You might be surprised at what's just around the corner. ISBN 0-9657558-4-3

The Oregon map set includes locations of:

• Gold & Silver
• Agate
• Apache Tears
• Bloodstone
• Carnelian
• Chalcedony
• Feldspar
• Fossils
• Garnet
• Geodes
• Jade
• Jasper
• Limb Casts
• Nodules
• Obsidian
• Opal
• Petrified Wood
• Quartz
• Rhodonite
• Rhyolite
• Sagenite
• Serpentine
• Sunstones
• Thunder Eggs
• Tourmaline