In 1928 he first presented a paper at the International Congress of Americanists in which he presented his translation of a Nahuatl document held at the Peabody Museum at Harvard.
1928. aastal esines ta Amerikanistide rahvusvahelisel kongressil ja esitas oma tõlke Harvardi Peabody muuseumis hoitava nahua-keelsele dokumendile.