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Walum Olum or Red Score: The Migration Legend of the Lenni Lenape or Delaware Indians

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Rau, Charles 1879. The Palenque Tablet, in the United States National Museum, Washington. Smithsonian Institution, Contributions to Knowledge 22 (5). Washington.

Smithsonian Institution, Contributions to Knowledge

Ray, John D. 1986. The emergence of writing in Egypt // World Archaeology 17: 307–316.

World Archaeology

Reichardt, Alexander 1908. E. W. Förstemann // Biographisches Jahrbuch und Deutscher Nekrolog, 177–180. Berlin.

Biographisches Jahrbuch und Deutscher Nekrolog

Robertson, Merle Greene 1974. Preface // Primera Mesa Redonda de Palenque, Part I, ed. M. G. Robertson, iii-iv. Pebble Beach, Calif.: Robert Louis Stevenson School.

Primera Mesa Redonda de Palenque, Part I

de Rosny, Léon 1876. Essai sur le déchiffrement de l’écriture hiératique de l’Amérique Centrale. Paris.

Essai sur le déchiffrement de l’écriture hiératique de l’Amérique Centrale

Robinson, Andrew 2002. The Man Who Deciphered Linear B: the Story of Michael Ventris. London and New York: Thames & Hudson.

The Man Who Deciphered Linear B: the Story of Michael Ventris

Robinson, Andrew 2007. The Story of Writing. Pictographs, Hieroglyphs and Phonograms. London and New York: Thames & Hudson (2nd edition 2007 London and New York: Thames & Hudson).

The Story of Writing. Pictographs, Hieroglyphs and Phonograms

Robinson, Andrew 2009. Lost Languages. The Enigma of the World’s Undeciphered Scripts. London and New York: Thames & Hudson.

Lost Languages. The Enigma of the World’s Undeciphered Scripts

Rodríguez Martínez, Ma. Del Carmen, Ponciano Ortíz Ceballos, Michael D. Coe, Richard A. Diehl, Stephen D. Houston, Karl A. Taube, and Alfredo Delgado Calderón. 2006. Oldest Writing in the New World // Science 313 (5793): 1610–1614.