Letters from Hester Maria Elphinstone, née Thrale, Viscountess Keith, and her sisters Susanna Arabella Thrale and Sophia Thrale, to Gabriel Piozzi and HLP:
- number 1 is addressed to Mrs Thrale;
- numbers 1-10 are signed by H.M. Thrale;
- numbers 11-19 are formal notes, unsigned, from Miss Thrale, five from the Misses Thrale;
- number 20 is signed by H.M. Keith;
- numbers 21-25 are signed by S.A. Thrale;
- numbers 26-34 by Sophia Thrale.