Karl von Mueller

• The Treasure Hunter's Manual #7
• Vibrating gold concentrators
• Selections From The National Prospector's Gazette Volume 3
• The Master Hunter Manual
• Coinshooters Manual
• Gold Dredger's Handbook (Plastic Binding)
• Placer Miners Manual
• The Treasure Hunter's Manual
• The Treasure Hunter's Manual #6
• Waybills to El Dorado