- https://www.biodiversitylibrary.org/
- https://www.bnf.fr/fr
- https://archive.org/
- https://books.google.it/
- https://research.ebsco.com/c/2j64g6/search (biblioteche sapienza)
- https://fr.wikisource.org/
- https://cnum.cnam.fr/ (anteprime veloci)
- https://opac.uniroma1.it/SebinaOpacRMS/.do
- https://opac.sbn.it/
- https://www.europeana.eu/
- https://babel.hathitrust.org/
- https://onlinebooks.library.upenn.edu/
- https://www.digitale-sammlungen.de/de/view/bsb11032059?page=5 (biblioteca monaco)
- https://www.persee.fr/
- https://patrimoine.minesparis.psl.eu/
- https://patrimoine.ensam.eu/ - Bibliothèque patrimoniale numériquearts et metiers
- https://www.e-rara.ch/ (scansioni complete e ad alta risoluzione)