Works of "Research Collection"
Place Collected: Lake Superior
Place Collected: Lake Superior
Place Collected: Lake Superior
Place Collected: Lake Superior
Place Collected: Lake Superior
Place Collected: Montreal
Place Collected: Mixter Springs
Place Collected: Banska Bela
Place Collected: Bodenmais
Place Collected: Ullersreuth Am Hof
Place Collected: near Trabau
Place Collected: Freiberg