Retalhuleu Department in the context of "Mam language"

Mam is a Mayan language spoken by about half a million Mam people in the Guatemalan departments of Quetzaltenango, Huehuetenango, San Marcos, and Retalhuleu, and the Mexican states of Campeche and Chiapas. Thousands more make up a Mam diaspora throughout the United States and Mexico, with notable populations living in Oakland, California and Washington, D.C. The most extensive Mam grammar is Nora C. England's A grammar of Mam, a Mayan language (1983), which is based on the San Ildefonso Ixtahuacán dialect of Huehuetenango Department.