- 1Photograph of the Design for a Gilded National Monument (TREVF/2/4)
1832- 1872, item - 2Photograph of Illustration of the Gilded Conical Cast Iron Monument (TREVF/2/5)
1832- 1872, item - 3Photograph of Redruth Vicarage (TREVF/2/6)
early 19th century - 1872, item - 4Photograph of Carn Brea Castle (TREVF/2/7)
early 19th century - 1872, item - 5Postcard Featuring a Photograph of Richard Trevithick's House at Penponds (TREVF/2/8)
1902-1918, item - 6Statement of accounts between Messrs Trevithick and Co and Samuel Homfray (MS/1944/04)
December 1803-July 1807, item