Nearly a century's break in the field of printing activity in Carniola since Joannes Manlius's extradition ended by the arrival of typographer and bookseller Joannes Baptista Mayr from Salzburg (1634–1708). He came to Ljubljana in 1678 at the invitation of the Carniolan states, and theologian and historian Johann Ludwig Schönleben. During more than fifty years of its operation, Mayr's printing house published several Latin, German and Slovenian scientific, educational, literary, philosophical and religious works, including those written by the members of Academia Operosorum. After Mayr’s death, his son Joseph Thaddaeus took over the printing press and the bookshop. His widow Anna Barbara ran the printing house until 1705, and was followed by her son Johann Georg. Around 1731, Adam Friderik Reichardt took over the company.

Presented in the collection is a selection of prints from the National and University Library's collections that were suitable for digitization, as well as some copies of Mayr's prints that are kept at the Miran Jarc Library in Novo mesto, and in the Ljubljana City Library.