Otis T. Mason's 1901 article classifies the technical methods of Native American basketry into woven (plicated) and coiled types. Woven types covered are checkerwork, diagonal or twilled work, wickerwork, and twined work, the last with plain, diagonal, wrapped (birdcage), lattice (tee), and three-ply varieties. Coiled types are classed by foundation: single-rod, two-rod, rod and welt, three-rod, splint (including the imbricated Klikitat style), and grass or shred. Forty numbered figures illustrate the structures, with examples from the Pomo, Hopi, Tlingit, Aleut, Nez Percé, Thompson River and other peoples. Decoration is explicitly left for a later paper.