Copy of a letter, from John Frederick William Herschel to Richard Sheepshanks, dated at [32 Harley St.] Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Agrees to sign certificate for William Simms, but as John Frederick William Herschel is at present on the Council of the Royal Society [of London], his signature may not be allowed. 7 December 1851