Gold and diamond mining.- Penning (W.H.) Gold and Diamonds, first edition, 1901.

Gold and diamond mining.- Penning (William Henry H.) Gold and Diamonds, first edition, plates and illustrations, spotting and foxing, contemporary ink ownership inscription to endpaper, original cloth, spine ends and corners a little bumped, covers a little rubbed and marked, 8vo, 1901.

⁂ A rare work on by an important British geologist surveying the gold and diamond fields of South Africa, COPAC lists 5 copies only.