The study provides an overview of the ‟Electronic Collection of Textbooks in the Languages of the Peoples of Karelia” and outlines the possibilities of its use for solving research tasks. The study shows the history of the idea’s inception and the steps taken to create the electronic resource in response to public demand and scientific research needs. The study characterizes the structure and content of the collection, briefly outlines the main stages of the national-language policy in Karelia that influenced the history of regional textbooks; it highlights several authors who made a significant contribution to the creation of school textbooks. The study emphasizes that the creation of the electronic collection aligns with the global trend of converting library collections into digital format, ensuring the preservation of books and expanding their accessibility to readers, as well as promoting the idea in society of treating school textbooks as cultural heritage.