During a hundred-year period between the mid-18th and 19th centuries, a major industry flourished in England which had its origins in both architectural ornamentation and japanned tinware. The development of japanned papier-mâché led to an unparalleled trade that resulted in the manufacture of many articles of furniture. A chair typifying these developments was analyzed and treated by the Conservation Analytical Laboratory, Smithsonian Institution. Since so little has been printed on the treatment of japanned papier-mâché, this report was prepared to review both the technology leading to the production of the chair and recommendations for the repair of such artifacts. An understanding of the chair's technology aided in the formulation of its final treatment.