The area between the Cascade Mountains and the Rocky Mountains in Washington, Oregon, Idaho, British Columbia, and Western Montana is known as the Plateau Culture area. From north to south it runs from the Fraser River in the north to the Blue Mountains in the south. One of the most important geographic and culture features of the region is the Columbia River. American Indian people have lived along the Columbia River in permanent and semi-permanent villages for thousands of years. As with other American Indian people, art was not a separate category in their lives, but was a part of everyday life. In museum collections, such as that of the Portland (Oregon) Art Museum, their art is often categorized as carvings (stone, bone, wood), beadwork, and basketry.
While it is common for people to assume that basketry refers to containers, shown above are some typical examples of Plateau basketry used in making hats.
Also called Sally Bags and Corn Husk Bags, these bags were made from cornhusk, hemp, string, and yarn using a continuous weave that eliminates seams. Originally, these bags were used for storing foods, such as roots, as the tightness of the weave keeps out dust and dirt.