Letter concerning the financial arrangement for Trevithick's wife Jane to join him in London
Arrangements for trials of an engine at Herland and alterations to an engine at Wheal Treasure
Letter relating to affidavits supporting Harvey's role as a manager
Inheritance of Trevithick property at Penpons. Taking up of a deed for Penpons
Harvey's concern over Trevithick's financial situation
Letters from Henry Harvey to Richard and Jane Trevithick
Affidavits supporting Harvey's appointment as manager
Arrangements for Trevithick's return to Penpons
Letter concerning Trevithick's recovery from illness and Harvey's recommendation for Trevithick to return to Cornwall
Harvey's concerns over Trevithick's financial situation
Arrangements for Trevithick's return to Penpons
Letters (11) 1807-1816 [to] Richard [and] Jane Trevithick
1807-1816