Historical science is founded on historical sources, on their critical examination, comparison, establishment of reliability and their synthesis. For this reason this fact must be taken into account in history lessons and historical sources must be placed above all other learning resources. A literary text may serve as a historical source. These can be excerpts from belletristic works of writers who studied the real historical circumstances by referring to archival material while writing the literary text. Such descriptions with picturesque words will attract the attention of pupils with their suggestiveness and richness of artistic expression, enrich their notions of specific historical circumstances, and motivate their thinking about life and concrete matters. Such works encourage pupils to read historical texts and motivate them. Literary texts which are considered historical sources include: historical novels, novellas and poems with historical contents. Shorter and methodically useful excerpts must be chosen with care. The texts can be read at the beginning of a lesson as introduction into a new methodical unit; they can be used as subject matter for raising new issues, or left for the conclusion of a lesson for assimilation of learning content. When using literary texts, we distinguish the following: documentary literature (primary source), historical literature and so-called other literature.