(Sir Lyon, 1st Baron, 1818-1898, Scientist, Lord-in-Waiting to Queen Victoria, took part in organising the Great Exhibition)
Autograph Letter Signed to 'My dear Professor',
inviting him to come next day at 9 p.m., to meet T.R.H. the Duke d'Aumale, & Prince Joinville & the young Princes, the Duke D'Alençon, Duc de Penthievre & the Prince Condé, 1 side 8vo., 14 Abercromby Place, Edinburgh, 2nd June