Northeast Treasure Hunter's Gem and Mineral GuideKathy J. Rygle, Stephen F. Pederson · First published 2008AdventureOpen the Tome
Northwest Treasure Hunter's Gem and Mineral GuideKathy J. Rygle, Stephen F. Pederson, Antoinette Matlins · First published 2008 · Latest edition 2011AdventureOpen the Tome
Southwest Treasure Hunter's Gem and Mineral GuideKathy J. Rygle, Stephen F. Pederson · First published 2008AdventureOpen the Tome
Southeast Treasure Hunter's Gem and Mineral GuideKathy J. Rygle, Stephen F. Pederson · First published 2008AdventureOpen the Tome
