CEECS = Nevalainen, T. , H. Raumolin-Brunberg & A. Nurmi (comp.)1998Corpus of Early English Correspondence. Sampler. Helsinki: Department of English, University of Helsinki. ota.ahds.ac.uk/desc/2461
Rissanen, M. , M. Kytö , L. Kahlas-Tarkka , M. Kilpiö , S. Nevanlinna , I. Taavitsainen , T. Nevalainen & H. Raumolin-Brunberg
HC = Rissanen, M. , M. Kytö , L. Kahlas-Tarkka , M. Kilpiö , S. Nevanlinna , I. Taavitsainen , T. Nevalainen & H. Raumolin-Brunberg (comp.)1991The Helsinki Corpus of English Texts. Helsinki: Department of English, University of Helsinki. ota.ahds.ac.uk/desc/1477
LAEME = Laing, M. & R. Lass (comp.)2007A Linguistic Atlas of Early Middle English, 1150–1325. Edinburgh: University of Edinburgh. www.lel.ed.ac.uk/ihd/laeme1/laeme1.html