1 sheet Copy Letter from Thomas R. Edmonds to Francis Trevithick Regarding Papers Relating to Richard Trevithick
1 sheet Copy Letter from Edward Watkins to Thomas R. Edmonds Relating to Papers of Richard Trevithick
1 sheet Copy Letter from Francis Trevithick to Edward Watkins Regarding Richard Trevithick’s Time in South America
1 sheet Prospectus for William Walker’s Engraving of The Distinguished Men of Science of Great Britain
1 sheet Letter from Henry Hyde Clarke to Francis Trevithick Regarding a Claim Against the Peruvian Congress