Aksara Isthmian adalah sistem penulisan Mesoamerika paling awal yang dipakai di wilayah Tanah Genting Tehuantepec dari mungkin 500 SM sampai 500 M, meskipun tidak ada kesepakatan pada penanggalannya. Aksara ini juga disebut aksara La Mojarra dan aksara Epi-Olmec.

Referensi

• Brigham Young University press-release on behalf of Brigham Young University archaeologist Stephen Houston and Yale University professor emeritus Michael Coe disputing the Justeson-Kaufman findings.
• Diehl, Richard A. (2004) The Olmecs: America's First Civilization, Thames & Hudson, London.
• Houston, Stephen, and Michael Coe (2004) "Has Isthmian Writing Been Deciphered?", Mexicon XXV: 151-161.
• Justeson, John S., and Terrence Kaufman (1993), "A Decipherment of Epi-Olmec Hieroglyphic Writing" in Science, Vol. 259, 19 March 1993, pp. 1703–11.
• Justeson, John S., and Terrence Kaufman (1997) "A Newly Discovered Column in the Hieroglyphic Text on La Mojarra Stela 1: a Test of the Epi-Olmec Decipherment", Science, Vol. 277, 11 July 1997, pp. 207–10.
• Justeson, John S., and Terrence Kaufman (2001) Epi-Olmec Hieroglyphic Writing and Texts Diarsipkan 2011-05-25 di Wayback Machine..
• Lo, Lawrence; "Epi-Olmec", at Ancient Scripts.com (accessed January 2008).
• Pérez de Lara, Jorge, and John Justeson "Photographic Documentation of Monuments with Epi-Olmec Script/Imagery", Foundation for the Advancement of Mesoamerican Studies (FAMSI).
• Robinson, Andrew (2008) Lost Languages: The Enigma of the World's Undeciphered Scripts, Thames & Hudson, ISBN 978-0-500-51453-5.
• Schuster, Angela M. H. (1997) "Epi-Olmec Decipherment" in Archaeology, online (accessed January 2008).

Pranala luar

• "Photographic Documentation of Monuments with Epi-Olmec Script/Imagery" from the Foundation for the Advancement of Mesoamerican Studies, Inc.
• High resolution image of the Isthmian glyph table
• Tuxtla Statuette photograph
• Drawing of La Mojarra Stela 1
• High resolution photo of the Coe/Houston Mask Diarsipkan 2007-03-11 di Wayback Machine.