20.9.1838
Sender P.I. Heyn
Recipient Bertel Thorvaldsen
Bill from Heyn, the hatter, for a hat for Thorvaldsen.
18.11.1838
Bill from Heyn, the hatter, for Thorvaldsen’s hat for the uniform of the French Academy, N174.
15.1.1843
Bill from Heyn, the hatter, to Thorvaldsen – probably for the top-hat N185.