[Sir William Jackson Hooker, biologist, first Director of the Royal Botanic Gardens at Kew.] Autograph Signature in valediction to letter.

See his entry in the Oxford DNB. On 9.5 x 3 cm slip of paper, cut from letter. In good condition, lightly aged. Reads: 'Your affectionate / friend / W. J. Hooker'. Fragment of text on reverse: '[...] there is any foundat[...] / for the above repor[...] / or not. If there [...]'.