A second hand has added a bibliographical reference to the upper left-hand corner of f.401r. The same hand has also added a footnote to f.401r identifying the recipients of a letter, and the date ’12 fev 1776′ between l.2 and l.3 of the letter on the same folio. The footnote is linked to the main text through the use of a corresponding symbol and is signed ‘LDB’. A third hand has added an additional note to the upper right-hand corner of f.401r providing context on a matter referenced in the letter.