Atlas of crystal stereogramsRichard Maxwell Pearl, Richard M. Pearl · First published 1976Open the Tome
The wonder world of metalsRichard Maxwell Pearl, Richard M. Pearl · First published 1966Open the Tome
Gems, minerals, crystals, and oresRichard Maxwell Pearl, Richard M. Pearl · First published 1964Open the Tome
1001 questions answered about earth scienceRichard Maxwell Pearl, Richard M. Pearl · First published 1962Open the Tome
Successful mineral collecting and prospectingRichard Maxwell Pearl, Richard M. Pearl · First published 1961Open the Tome
1001 questions answered about the mineral kingdomRichard Maxwell Pearl, Richard M. Pearl · First published 1959Open the Tome
Colorado gem trails and mineral guideRichard Maxwell Pearl, Richard M. Pearl · First published 1958Open the Tome
