Social networks are a valuable object of investigation in historical sociolinguistics, as they can contribute both to the onset of change and to the maintenance of linguistic norms. However, their characteristics make them complex to analyse, as their intrinsic variability may hinder the identification of phenomena that span different networks across time and space. This chapter is focused on Late Modern English materials, to present new resources through which network contiguities can be studied; this is the case, for instance, with the exchanges of emigrants, political activists, scholars and business correspondents. After addressing a few methodological issues, the chapter presents an overview of the materials at hand and outlines how networks and coalitions have had an impact, not only on the usage of participants (as shown in recent studies) but also on how language has been perceived, described and codified.