The corpus comprises of the letters and drafts from Elias Lönnrot, the creator of the Kalevala, medical doctor and professor of language (1802 – 1884). The letters, written to private individuals and institutions from the 1830s until Lönnrot's death, belong to the Archive of the Finnish Literature Society and have been transliterated for the project Elias Lönnrot’s Letters Online, http://lonnrot.finlit.fi/omeka/ . The entire collection contains approximately 2 500 letters, approximately 65−70 % of which is in Swedish, the rest manly in Finnish. The largest sub collection consists of over 200 letters sent to one individual recipient.
The corpus will be published at htps://korp.csc.fi