Works of "Research Collection"
Place Collected: North Mine
Place Collected: Pottsgill Mine
Place Collected: Pottsgill Mine
Place Collected: Vachuca Mtns.
Place Collected: Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine)
Place Collected: Ojuela Mine
Place Collected: Copper Cities Mine (Sleeping Beauty Mine; Lost Gulch Mine; Yellow Metal Mine; Diamond-H Mine)
Place Collected: Copper Cities Mine (Sleeping Beauty Mine; Lost Gulch Mine; Yellow Metal Mine; Diamond-H Mine)