Pestles.

Smith, H. I. American Anthropologist, vol. 1, n. s., p. 363. 1899.

Holmes, W. H. American Anthropologist, vol. 9, n. s., p. 124. Middle Atlantic Shell-Heaps. 1907.

Bushnell, D. I., Jr. American Anthropologist, vol. 10, n. s., p. 544. 1908.

Sinclair, W. J. Publications of the University of California, vol. 7, 2, p. 113. 1908.

Kroeber, A. L. Publications of the University of California, vol. 8, 2, p. 51. Cahuilla. 1908.

Pictographs.

Brown, E. American Antiquarian, vol. 2, p. 257. 1880.

Note. American Antiquarian, vol. 6, p. 119. 1884.

Barber, E. A. American Antiquarian, vol. 6, p. 386. 1884.