Index of Modern Paperback Publishers. Russell Barnes, Hyde Park Books, Idaho
Histories of U.S. Publishers. Russell Barnes, Hyde Park Books, Idaho
Libraries Today. Canadian library history. Lorne Bruce
Il libro antico. Angela Nuovo, Aldo Coletto and Graziano Ruffini
Private Libraries in Renaissance England (PLRE) Folger database
HENRIK: Books and their Owners in Finland to 1809. Finnish Lit. Soc. & Project Henrik. Database
The Digital Scriptorium, Database. University of California Berkeley
Medieval Illustrated Manuscripts. KB and Museum Meermano
The Duke Papyrus Archive. Searchable database about papyri
DEEP: Database of Early English Playbooks
Typefoundry: Documents for the History of Types and Letterforms. James Mosley
Museu Virtual da Imprensa (Porto, Portugal)
