Copernicus, who had studied in Kraków, opted for Johann Haller, who together with Kasper Hochfeld had already published the first illustrated work in Poland, Jan Łaski's Statutes (1506), and one of 25 works by Laurentius Corvinus (1508). Corvinus had lectured at the Kraków Academy while Copernicus studied there, and they were well acquainted.
Copernicus, who attended university in Kraków, chose Johann Haller, who, along with Kasper Hochfeld, had already released the first illustrated publication in Poland, Jan Łaski's Statutes (1506), and one of 25 works by Laurentius Corvinus (1508). Corvinus was a professor at the Kraków Academy during Copernicus' studies, and they were familiar with each other.