ENThe article discusses the Oginskiana, preserved in the Wróblewski Library of the Lithuanian Academy of Sciences, defined as everything that pertains to the life of the Oginskis: not only cultural legacy, created by the members of this family, but also their documentary legacy as a meaningful reflection of their work and life. The Oginskiana, deposited in this library, is reviewed in four parts: 1) archival documents (manuscripts); 2) publications; 3) books from libraries of the Oginskis (with insignias and other marks of ownership); 4) iconography. Some of these documents were presented in the collection of articles published in 2010, dedicated to the cultural legacy of the dukes Oginski. The greatest focus in the article is on the creative legacy of Michal Kleofas Ogiński and the documentary heritage related to his person.