 Beginning in 1473 in Cracow (Kraków), the printing business kept growing.By the turn of the 16th/17th century there were about 20 printing houses within the Commonwealth, 8 in Cracow, the rest mostly in Danzig (Gdańsk), Thorn (Toruń) and Zamość.The Academy of Kraków and Sigismund II possessed well-stocked libraries; smaller collections were increasingly common at noble courts, schools and townspeople's households.