Records of Stephen Green Limited, patent medicine manufacturer, 1780-1930. The records relate to proprietorship of the recipe for "Doctor Johnson's Golden Ointment" including legal documents and legal case papers; and records relating to the manufacture and sale of the ointment including financial accounts, order books, correspondence, sales summaries, testimonials, advertising, legislation involving patent medicines and history of the ointment. Also various family and estate records.

Records of Smith Kendon Limited, 1826-1987. The collection mainly comprises the papers of Donald Smith and his capacity as Managing Director and Chairman of Smith Kendon Limited, including papers relating to the formation of the business such as articles of partnership and certificates of registration; deeds and other legal documents relating to property owned by the company; insurance policies; inventories; correspondence; minutes of meetings; Donald Smith's business diaries; sales figures; financial accounts; papers relating to stock and stock control; papers relating to sales; papers relating to products including recipe books; advertising; reports; staff records and papers relating to the Second World War.