Letter from William Walker to Francis Trevithick Regarding the Proof Sheets of Walker's Memoir of Richard Trevithick

Letter from William Walker to Francis Trevithick discussing proof sheets of a memoir of Richard Trevithick he has written to accompany his engraving of ‘The Distinguished Men of Science of Great Britain’ and enclosing a prospectus for the work (1 sheet/4pp.). See TREVF/4/59.