Аннотация:This article explores the sociolinguistic history of a U.S. city. On the basis of historical research, ethnography, discourse analysis, and sociolinguistic interviews, the authors describe how a set of linguistic features that were once not noticed at all, then used and heard primarily as markers of socioeconomic class, have come to be linked increasingly to place and “enregistered” as a dialect called “Pittsburghese.” To explain how this has come about, the authors draw on the semiotic concept of “orders of indexicality.” They suggest that social and geographical mobility during the latter half of the twentieth century has played a crucial role in the process. They model a particularistic approach to linguistic and ideological change that is sensitive not only to ideas about language that circulate in the media but also to the life experiences of particular speakers; and they show how an understanding of linguistic variation, language attitudes, and the stylized performance of dialect is enhanced by exploring the historical and ideological processes that make resources for these practices available.