Several European-American merchants influenced Navajo weaving during the next decades. The first to advertise Navajo textiles in a catalog was C. N. Cotton in 1894. Cotton encouraged professional production and marketing among his peers and the weavers whose work they handled. Another trader named John. B. Moore, who settled in the Chuska Mountains in 1897 attempted to improve the quality of textiles he traded. He attempted to regulate the cleaning and dyeing process of artisans who did business with him, and shipped wool intended for higher grade weaving outside the region for factory cleaning. He limited the range of dyes in textiles he traded and refused to deal fabric that had included certain commercially produced yarns. Moore's catalogs identified individual textile pieces rather than illustrating representative styles. He appears to have been instrumental in introducing new motifs to Navajo weaving. Carpets from the Caucasus region were popular among Anglo-Americans at that time. Both the Navajo and the Caucasus weavers worked under similar conditions and in similar styles, so it was relatively simple for them to incorporate Caucasus patterns such as an octagonal motif known as a gul.