Boone, Elizabeth Hill (ED.) 1996 Andean Art at Dumbarton Oaks. Pre-Columbian Art at Dumbarton Oaks; No. 1. Dumbarton Oaks Research Library and Collection, Washington, D.C. vol. 1, p. 165-7, pl. 37.
Quilter, Jeffrey 2005 Treasures of the Andes: The Glories of Inca and Pre-Columbian South America. Duncan Baird, London. p. 124.
Romero, Gonzalo 1980 City of Silence. Américas 32 (9):31-36. p. 35.
Zuidema, R. Tom 2009 Tiwanaku Iconography and the Calendar. In Tiwanaku: Papers from the 2005 Mayer Center Symposium at the Denver Art Museum, Margaret Young-Sánchez, ed., pp. 83-100. The Mayer Center for Pre-Columbian and Spanish Colonial Art at the Denver Art Museum, Denver. p. 93-94, fig. 7, roll-out.
Acquired by Robert Woods Bliss ca. 1962
Robert Woods Bliss Collection of Pre-Columbian Art, Washington, DC, 1962.
Dumbarton Oaks Research Library and Collection, Pre-Columbian Collection, Washington, DC.