century Wasco Indian Twined Bag Showing Frog and Sturgeon Motifs. Made from Indian hemp, dogbane. The Wasco tribal grounds were historically along the Columbia River. Today they are part of the Warm Springs Reservation in Oregon.
Image An image showing the types of knots used in quipus: a figure-eight knot (in blue), a single knot (in red), and a long knot with three turns (in green). Note that these terms differ from the mathematical names for these knots.