Butte Mineral & Gem Club
Billings Gem & Mineral Club
Cody 59ers Rock Club
Colo Spgs Mineralogical Society
Billings, MT Gem & Mineral Society
Coulee Rock Club
Danbury Mineralogical Society
Gaston County Gem Mineral & Faceting Club
Gilsum Rock Swap
Indian Mounds Rock & Mineral Club
