• Oldenburg State Library
• Library of the Jade University of Applied Sciences in Oldenburg
• Library of the Federal Institute for Culture and History of the Germans in Eastern Europe (BKGE)
• Library of the Evangelical Lutheran Church Council
• Oldenburg City Library at the PFL

Some libraries currently offer a simplified online registration process for new users. Library users then have access to an extensive range of e-books, e-journals and databases.

• Bavarian State Library Munich:
  • Registration (limited to four weeks)
  • Research
• Berlin State Library - Prussian Cultural Heritage:
  • Registration (limited to one month)
  • Research