London: The Mining Magazine, 1912. First and limited edition, one of 3,000 copies. Folio. Numerous full-page and in-text illustrations reproducing the 1556 woodcuts. Numeral stamp on title-page. Original vellum parchment, spine lettered in black, uncut, joints repaired. Duveen, p.5; Hoover 28; Norman 21.

This first systematic treatise on mining and metallurgy was translated from the first Latin Edition of 1556 by the 31st President of the United States, Herbert Hoover, and his wife, Lou Henry. Hoover was a mining engineer before entering politics, and his wife a former Latin teacher.