 Although he did not use the term, Alexander J. Ellis's work on the language of miners "between rivers Tyne and Wansbeck" has been studied as an early transcription of Pitmatic, which used informants from Earsdon and Backworth.In the 1950s, the Survey of English Dialects included Earsdon as a site and many of the forms recorded matched the transcriptions in Ellis's early work, although some appeared to have modified under pressure from other forms of English.Harold Orton compiled a database of dialect forms for 35 locations in Northumberland and northern Durham, known as the "Orton Corpus".