References to Dmitrii Anichkov’s Annotationes in logicam, metaphysicam et cosmologiam (1782) regularly appear in literature on Russian book history. However, this publication not only did not exist, but could not exist. Anichkov, following the classification put forth by Christian Wolf and Friedrich Baumeister, regarded cosmology as part of metaphysics. In fact, Anichkov’s textbook, entitled Annotationes in logicam et metaphysicam, which was published in 1782 and 1783, included two volumes that ontology and cosmology respectively. Both are yet to be explored.