Louis T. Wells, Boston, acquired figure in 1972 near Pematang Siantar, Sumatra, until 1976 (pot acquired after 1972); [James Willis, San Francisco, 1976]; Fred and Rita Richman, New York, 1976–1988
Schoffel, Alain. Arts primitifs de l'Asie du Sud-Est : Assam, Sumatra, Bornéo, Philippines: collection Alain Schoffel. Meudon: Chaffin, 1981.
Taylor, Paul Michael, and Lorraine Aragon. Beyond the Java Sea: Art of Indonesia's Outer Islands. Washington, D.C.: National Museum of Natural History, Smithsonian Institution, 1991.
Capistrano-Baker, Florina H. Art of Island Southeast Asia: The Fred and Rita Richman Collection in The Metropolitan Museum of Art. New York: The Metropolitan Museum of Art, 1994, no. 22, pp. 50-51; 126.
Feldman, J. Arc of the Ancestors: Indonesian Art from the Jerome L. Joss Collection at UCLA. Los Angeles: Fowler Museum at UCLA, 1994.