- FondsMG 146 - W.O. Kupsch fonds
- Série organiqueJ. Audio-Visual Materials
- 2089 en plus...
- PièceWOK 18-146 - Gypsum, var. Selenite, South Dakota. A "Fish-tail" twin
- PièceWOK 18-147 - Agate, Brazil. Banded grey agate, crystalline quartz and amethyst
- PièceWOK 18-148 - Quartz, var. Milky quartz, Curay, Colorado. A choice group of large milky white crystals
- PièceWOK 18-149 - Quartz, var. Rock crystal, Little Falls, New York.
- PièceWOK 18-150 - Quartz, var. Petrified wood, near Holbrook, Arizona
- PièceWOK 19-1 - Smoky quartz, St. Gothard, Switzerland. A group of smoky crystals
- PièceWOK 19-2 - Quartz twin, Japan. Typical "Japanese" twin.
- PièceWOK 19-3 - Fluorite, Cave-in-Rock, Illinois. A group of large purple cubic crystals
- PièceWOK 19-4 - Fluorite, Westmoreland, New Hampshire. An excellent example of the octahedral cleavage fluorite
- 207 en plus...