Letters from Henry Harvey to Richard and Jane Trevithick

Letter relating to affidavits supporting Harvey's role as a manager

Letter concerning the financial arrangement for Trevithick's wife Jane to join him in London

Affidavits supporting Harvey's appointment as manager

Arrangements for trials of an engine at Herland and alterations to an engine at Wheal Treasure

Inheritance of Trevithick property at Penpons. Taking up of a deed for Penpons

Harvey's concern over Trevithick's financial situation

Letter from Henry Harvey concerning the cost of buying and shipping stone for an unspecified project

Arrangements for Trevithick's return to Penpons

Letter concerning Trevithick's recovery from illness and Harvey's recommendation for Trevithick to return to Cornwall

Arrangements for Trevithick's return to Penpons

Harvey's concerns over Trevithick's financial situation