Tannstetter gives in his "Viri Mathematici" a list of books in Stiborius's library, and also a list of works written by the latter himself. He mentions a five-volume "Opus Umbrarum" ("Work of Shadows"), in which Stiborius treated various astronomical and mathematical topics such as cartographic projections, the theory and use of the astrolabe including the saphea, the construction of sundials, and others. The work was the basis of his lectures in Vienna; it appears never to have been published though. A partial copy made in 1500 of these lecture notes has survived.