1. ceecs = The Corpus of Early English Correspondence Sampler. 1998. (Compiled by Terttu Nevalainen, Helena Raumolin-Brunberg, Jukka Keränen, Minna Nevala, Arja Nurmi and Minna Palander-Collin.) Helsinki: Department of Modern Languages, University of Helsinki.
2. hc = The Helsinki Corpus of English Texts. 1991. (Compiled by Matti Rissanen, Merja Kytö, Lena Kahlas-Tarkka, Matti Kilpiö, Saara Nevanlinna, Irma Taavitsainen, Terttu Nevalainen and Helena Raumolin-Brunberg.) Helsinki: Department of Modern Languages, University of Helsinki.
3. hcos = The Helsinki Corpus of Older Scots. 1995. (Compiled by Anneli Meurman-Solin.) Helsinki: Department of Modern Languages, University of Helsinki.
4. pceec = Parsed Corpus of Early English Correspondence, text version. 2006. (Compiled by Terttu Nevalainen, Helena Raumolin-Brunberg, Jukka Keränen, Minna Nevala, Arja Nurmi and Minna Palander-Collin, with additional annotation by Ann Taylor.) Helsinki: University of Helsinki and York: University of York. Distributed through the Oxford Text Archive.
5. ScotsCorr = The Helsinki Corpus of Scottish Correspondence 1540–1750. 2017. (Compiled by Anneli Meurman-Solin.) Helsinki: Research Unit for the Study of Variation, Contacts and Change in English (varieng), Department of Modern Languages, University of Helsinki. Last accessed 12 June 2023 at: http://urn.fi/urn:nbn:fi:lb-201411071