The Yorkshire lead mine, or, A new method of turning lead to gold [graphic].[1771]engTitle from item.Publication place and date inferred from that of the magazine for which this plate was engraved.Dated by British Museum catalogue: August 1770.Plate from: The Oxford magazine or, Universal museum ... London : Printed for the authors, v. 6 (1771), p. 88.Temporary local subject terms: Mines: lead mine -- Legal cases: 'lead mine case' -- Legal cases: Thomas Smith vs. George, Earl of Pomfret, 1770 -- Tools: pickaxes -- Lawyers -- Thomas Smith, Esq., of Gray's Inn.