Booklet with blue colour. An overview of the bleaching, dyeing, printing and finishing processes of Emile Welter, a machine manufacturer based in Mulhouse, Alsace. Authored by Welter and produced by the Chemistry Department at the Technologischen Gewerbe-Museums (Technological Trade Museum) in Vienna. Printed by Brustlein et Cie, Mulhouse, France. One copy bears the stamp of the Science & Art Department Educational Library.