- 1Letter from Henry Harvey concerning the cost of buying and shipping stone for an unspecified project (MS/1155/02)
1809-03-28, file - 2Arrangements for trials of an engine at Herland and alterations to an engine at Wheal Treasure (MS/1155/11)
1816-04-18, file - 3Letter concerning Trevithick's recovery from illness and Harvey's recommendation for Trevithick to return to Cornwall (MS/1155/03)
1810-06-01, file - 4Letter concerning the financial arrangement for Trevithick's wife Jane to join him in London (MS/1155/01)
1807-09-22, file - 5Letter relating to affidavits supporting Harvey's role as a manager (MS/1155/09)
1812-11-26, file - 6Letters from Henry Harvey to Richard and Jane Trevithick (MS/1155)
1807-1816, fonds - 7Harvey's concerns over Trevithick's financial situation (MS/1155/04)
1810-07-05, file - 8Harvey's concern over Trevithick's financial situation (MS/1155/05)
1810-07-13, file - 9Inheritance of Trevithick property at Penpons. Taking up of a deed for Penpons (MS/1155/06)
1810-07-24, file - 10Arrangements for Trevithick's return to Penpons (MS/1155/07)
1810-08-06, file - 11Arrangements for Trevithick's return to Penpons (MS/1155/08)
1810-08-26, file - 12Affidavits supporting Harvey's appointment as manager (MS/1155/10)
1812-11-28, file
