A Grammar of the Dialect of the Bolton Area is a two-part dialectological book written by Graham Shorrocks, a professor at the Memorial University of Newfoundland, based on a series of research projects in the 1970s and 1980s. From 1972 to 1974 Shorrocks did fieldwork in his hometown of Farnworth supported by a grant from the University of Sheffield. He later undertook further fieldwork in other parts of the Bolton metropolitan borough in the 1980s. Part 1 was published in 1998, and Part 2 in 1999. The book argues that grammatical variation amongst dialects of English has been underestimated. In the preface, the author says that the account of the morphology and syntax is "probably more detailed than the grammatical component in any other monograph devoted to a British English dialect".