mayos (1577, actual Estado de México)
Códice de Tributos de Santa Cruz Tlamapa. BNAH. 35–58.
ipan diez y nueve de mayor de mil y quinios y sesenta y seis años (Tlaxcala, 1566)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 1.
yc nahuilhuitl mani metztli mayo 1631 años (location unclear, circa 1632)
Beyond the Codices, eds. Arthur J.O. Anderson, Frances Berdan, and James Lockhart (Los Angeles: UCLA Latin American Center, 1976), Doc. 7.
ynic matlactli omey 13 tonali mani metztli mayo (Puebla, circa 1680–1700)
Frances Karttunen and James Lockhart, Nahuatl in the Middle Years: Language Contact Phenomena in Texts of the Colonial Period, Linguistics 85 (Los Angeles, University of California Publications, 1976), Doc. 9.
Metztli de Mallo = month of May (Yancuictlalpan, Toluca valley, 1810)
Miriam Melton-Villanueva, The Aztecs at Independence: Nahua Culture Makers in Central Mexico, 1799–1832 (Tucson: University of Arizona Press, 2016), 185–185. Note the use of ll in place of y, a late phenomenon.