Researchers of the Institute of Linguistics, Literature and History KarRC RAS managed to collect letters from nine soldiers who wrote to their relatives in Karelian or with some phrases in Karelian as a result of the Interregional Marathon Letter Marathon "Hengen vägi muaman kieles" ("Morale in the native tongue"). All the letters were digitized and published online. Each letter is accompanied by a textual transcript and translation. Information about the author and the person preserving the letter is also provided. In addition, a list of resources available on this subject in other regions of the country and a list of literature and published sources were compiled.

"What makes this finding unique is that during the wartime the use of the Karelian language, lexically similar to the language of the enemy, was discouraged. That is why such sources are rather rare", – the project authors remark in the preface.

Scientists say that the authors of the letters used their native language to communicate something particularly important and intimate. It fortified the morale, gave them the power to live and fight.

During the project, researchers discovered so-called “Karelian” letters, which are not only historical artifacts, but also handwritten monuments of the Karelian language, which had for a long time had no standard written form.

"These letters, written by Karelians of the Karelian ASSR and Kalinin (now Tver) Region in Livvi, Karelian Proper, and Tver dialects, use both Russian and Latin characters. The language of the letters on the website written by the natives of Northern Karelia can be conditionally called Karelian-Finnish. The authors of these letters were fluent in the literary Finnish language, interlacing it with native dialectal (grammatical, lexical) forms", - the authors of the project explain.