Otis T. Mason describes the Hudson collection of Pomo basketry from the Russian River region of California, acquired by the U.S. National Museum in 1899 from Dr. J. W. Hudson. The article lists the plants, minerals, and animal materials used, with Pomo names and the parts used. It then classifies the baskets into twined and coiled weaving types, with Pomo terms for each. It closes with notes on ornamentation, feather and shell decoration, and the meanings of patterns.