1. The Origins of Mesoamerican Writing
2. Notes on the Number “One” in Mayan Hieroglyphic Writing.;Smith-Stark;Paper presented at the Colloquium on the Language of Writing in the Mayan Region, University of Chicago.,1984
3. In the World of the Sun and the Four Quarters : Maya Cosmology— Tomb 12, Rio Azul.;Carlson;Paper presented at the Sexta Mesa Redonda de Palenque, Palenque, Chiapas, Mexico,1986