SHARP-L. The discussion group of the Society for the History of Authorship, Reading and Publishing
Waddleton Chronology of Colour Printed Illustrations. Norman Waddleton
Early Printed Books Project. University of Oxford
Book History Online: An International Bibliography (Koninklijke Bibliotheek). Searchable database
19th-c. Books on Publishing and the Book Trade. Includes searchable catalogue
Museu Virtual da Imprensa (Porto, Portugal)
