Królewiec was one of the centers of Polish printing (along with Wrocław and Krakow).

An excerpt from the article 24 facts about Kaliningrad

In the years 1543-1552, more books in Polish were published in Królewiec and Ełk than in the entire Polish-Lithuanian Commonwealth. From the 16th to the 20th century, the city was a publishing center for Polish-language religious literature.

In 1545, the first Polish catechism by Jan Seklucjan was published in Królewiec, and 1551 the first printed translation of the gospel into Polish. Two years later, a translation of the entire New Testament was published, the so-called The King's Bible.

Jan Kochanowski printed his works in Królewiec.