Wisconsin Walloon is a heritage dialect of a threatened language in the langue d'oïl family that originated in southern Belgium and expanded to northeastern Wisconsin, USA in the mid-1850s. Walloon-speaking immigrants formed an isolated agricultural community, passing on and using the language for the next two generations until English became the…

Communities around the world have distinctive ways of representing language use across space and territory. The approach to and method of mapping languages that began with nineteenth-century European dialectology and colonial boundary making is one such way. Though practiced by relatively few linguists today, language mapping has developed…