This article includes the results of a continuation of a study conducted in 1997 to investigate the upholstery, construction and finishes of several pieces of furniture from the Frank Lloyd Wright designed Darwin Martin house in Buffalo, New York. This paper goes further in depth about physical evidence and historical practice. It provides technical and historical information that will assist conservators and curators in understanding the materials and construction of Frank Lloyd Wright furniture from the early twentieth century. The information in this paper will also assist in the proper care and conservation treatment of these objects. Methods of analysis used include X-radiography to determine construction techniques, ultraviolet light and microscopy to aid in determining the finishes as well as polarized light microscopy for fiber identification. Historical references, original photographs and drawings were utilized to confirm information found in analysis.