- 1Papers relating to Francis Trevithick's biography of his father Richard Trevithick (TREVF)
 1746 - 1979, fonds
- 2Box file containing portraits of Victorian railway engineers compiled by C. F. Dendy Marshall (YA1983.9/3)
 c 1830-c 1930, file
- 3Collection of letters to Richard Trevithick, mainly concerning the design and efficiency of steam-engines (MS/0347)
 1815 May - 1831 December, fonds
- 4Papers relating to the Thames Driftway and Richard Trevithick's involvement in the project (MS/0207)
 1808-1809, fonds
- 5Cost books for mines in Cornwall (MS/0627)
 c 1765-1816, fonds
- 6Plans, Maps and Sketches (TREVF/1)
 1746 - c 1839, series
- 7Photographs (TREVF/2)
 19th century - 20th century, series
- 8Research Notes and Papers (TREVF/3)
 1765 - 1877, series
- 9Correspondence (TREVF/4)
 1800 - 21 January 1875, series
- 10Printed Materials (TREVF/5)
 1839 - 1971, series
- 11Photograph of Richard Trevithick's Birth Place in the Parish of Illogan (TREVF/2/2)
 1870, item
- 12Photograph of Early Residence of Richard Trevithick at Penponds (TREVF/2/3)
 1870, item
- 13Notes of Captain Andrew Vivian’s Recollections of Richard Trevithick (TREVF/3/8)
 28 March 1858, item
- 14Notes on Trevithick Family Recollections (TREVF/3/9)
 1860 - February 1862, item
- 15Notes Relating to the People Working with Richard Trevithick’s Engines (TREVF/3/10)
 13 June 1865, item
 
      
 
                     
                     
        