The insertions include poems and letters in the poet's hand (MS.15957, folio 13; MS.15958, folios ii, 19; MS.15959, folio 18; MS.15960, folio 5; MS.15967, folios 9, 13, 14); letters, 1796-1809, from his brother Gilbert about the family; and correspondence, 1798-1800 of James Currie about an edition of the poems.