Sir John Frederick William Herschel Bt. (1792 - 1871)

Note on the speed at which the sun and planets travel, citing Sir William Herschel, and on the diameter of the sun

c. 1850

Item GI/3/48

M. Alford, Ashridge, Gt. Berkhampstead, to [John] Gibson

c. 1860

Item GI/1/3