The study documents the extensive manuscript transmission of Ars memorativa -treatises of the 15th century. It includes information on authors and text contents, arranging the subject in the order of a textual genealogy. Comparing German translations with their Latin sources the modifications in the intended use of texts, being introduced into vernacular language, are examined. Based on the total textual corpus traditions and innovations of mnemotechnics and its different philosophical conceptualizations in the late Middle Ages are discussed.