The box contains 24 manuals for D Wickham & Co Ltd, Linke-Hofmann-Busch GmbH, Railway Mine & Plantation Equipment Limited, Worthington-Simpson Ltd, The Motor Gear and Engineering Co Ltd, Howard Clayton-Wright Limited, Borg & Beck Company Ltd, The Holset Engineering Co Ltd, Castrol Ltd, Clayton Dewandre, Simms Motor Units Ltd, Edward Pryor & Son Ltd, Nife Batteries Ltd, The Pyrene Company Ltd, Smith's Delivery Vehicles Ltd, L Gardner & Sons Ltd, Broom & Wade Ltd, Henry Wiggin & Company Ltd and J Stone & Co (Deptford) Ltd.