Copy of draft letter, from Sir John Herschel to William Howley, dated at Collingwood Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Asks Archbishop of Canterbury [William Howley] to accept John Frederick William Herschel's resignation. Impossible to give adequate attention to John Frederick William Herschel's duties as trustee [of British Museum]. 20 January 1848