- Charles University – Prague, Czechia
- Abbey Library of Klosterneuburg – Klosterneuburg, Austria
- Abbey Library of Saint Gall – St. Gallen, Switzerland
- Austrian Academy of Sciences – Vienna, Austria
- Austrian National Library – Vienna, Austria
- Cambridge University Library – Cambridge, United Kingdom
- Heidelberg University – Heidelberg, Germany
- Macquarie University – Sydney, Australia
- National Library of the Czech Republic – Prague, Czechia
- National Scientific and Technical Research Council (CONICET) – Buenos Aires, Argentina
- Otsuma Women’s University – Tokyo, Japan
- Queen Mary University of London – London, United Kingdom
- University of Florence – Florence, Italy
- University of Hamburg – Hamburg, Germany
- University of Oxford – Bodleian Library – Oxford, United Kingdom
- University of Pennsylvania – Philadelphia, United States
- University of Warsaw – Warsaw, Poland
- University of Wrocław – Wrocław, Poland
