Letters to HLP from Sarah Siddons and her husband William, actors and friends of HLP, Sophia Weston and Fanny Burney etc.:
- numbers 1, 3-7, 9-16 are from Sarah Siddons;
- number 2 is from her daughter Sarah;
- numbers 17-28 are from William Siddons;
- number 8 is from M. Wilkinson, with a message on behalf of Mrs Siddons.
See Kalman A. Burnim, The letters of Sarah and William Siddons to Hester Lynch Piozzi in the John Rylands Library, Bulletin of the John Rylands Library, vol. 52 (1969), pp. 46-95.