1From Benjamin Franklin to Jean de Neufville & fils, 4 June 1780 (Franklin Papers)
LS : National Archives; copy: Library of Congress I received the Letter you did me the honour of...
2From Benjamin Franklin to Jean de Neufville & fils, 22 June 1780 (Franklin Papers)
LS : National Archives; copy: Library of Congress I received duly your respected Letter of the...
3From Benjamin Franklin to Jean de Neufville & fils, 6 June 1780 (Franklin Papers)
LS : National Archives; copies: Library of Congress, National Archives Since writing to you by...