The Ute people traded with Europeans by the early 19th century including at encampments in the San Luis Valley, Wet Mountains, and the Upper Arkansas Valley and at the annual Rocky Mountain Rendezvous. Native Americans also traded at annual trade fairs in New Mexico, which were also ceremonial and social events lasting up to ten days or more. They involved the trading of skins, furs, foods, pottery, horses, clothing, and blankets.