The author, a former director of the Textile Museum, Washington, DC, describes the complicated process of cleaning and repairing the judicial robe of John Marshall. Emphasis is placed on the importance of the preliminary examination and analysis of the old satin fabric to determine weave, dye, condition of fibers, etc. The devices employed to protect the fragile fabric during the cleaning process included a large wooden tub lined with plastic sheeting and a plastic screen lifting frame cushioned with a sheet of synthetic sponge. Although the wet cleaning formula devised by Colonel James Rice was successful for this particular garment, further experience with the cleaning of deteriorated silks has convinced the author that a modified dry cleaning process (a low percentage of water added to a dry cleaning solution and soap) would result in fewer wrinkles. In selecting a fabric for reinforcing the robe after cleaning, black silk organza was chosen because it was stronger and lighter in weight than the old satin. It clings to the old fabric and its fibers have the same degree of stretch and return of stretch, an essential feature when and if the robe is ever subjected to the strain of being exhibited upright. The article concludes with a detailed account of the patching and lining of the robe.