1851 Great Exhibition: Official Catalogue: Class X.: John Luntley
237. LUNTLEY, JOHN, New Broad Street Court — Inventor and Manufacturer.
Model of a self-propelling rotary balloon. Provisionally registered.
Specimens of engraving by the ruling machine, composed of circular, elliptical, spiral, straight, and graduated lines. Designed to prevent fraudulent imitation; with a border in chromo-lithography.