Volume of letters to his family

[Volume of letters to his family, especially to his brother, John / Humphry Davy. 1799?-1829. 69 items, guarded and bound in one volume. The majority of the letters are to his mother and to his brother, John. A few are to his sister, Catherine, and one to his sister, Elizabeth. Included is one 1829 letter from John to Catherine. Some were published or part-published in Memoirs of Sir Humphry Davy, Bart./John Davy, London 1836. With bound photocopy volume.