British Book Trade Index (BBTI). An index of the names and brief biographical details and trade details of people who worked in the book trade in England and Wales and who were trading by 1851

Book History Online: An International Bibliography (Koninklijke Bibliotheek). Searchable database

19th-c. Books on Publishing and the Book Trade. Includes searchable catalogue

Rare Images Database, Diet National Library. Database searchable in Japanese

19th-c. American Children's Book Trade Directory. American Antiquarian Society

Il libro antico. Angela Nuovo, Aldo Coletto and Graziano Ruffini

The Digital Scriptorium, Database. University of California Berkeley

The Duke Papyrus Archive. Searchable database about papyri

BibliOdyssey

Is it a Book? (Karen Drayne, Barbara Davison, Emily-Jane Dawson, U. Maryland)

The Wonderful World of Pop-Up and Movable Books, 1811-1996 (U. of North Texas)

Books Go to War: Armed Services Editions in WWII - Book Arts Press

Museu Virtual da Imprensa (Porto, Portugal)

The Legacy of Aldus Manutius and His Press

The Gutenberg Bible at the Ransom Center

St. Bride Printing Library. London. The world's foremost printing and graphic arts library.

Scottish Archive of Print and Publishing History Records. Oral history recordings, photographs, videos of the printing industry, along with ephemeral material such as trade literature and memorabilia. The archive collection is indexed and catalogued.

Cary Graphic Arts Collection, library of printing history, Rochester Institute of Technology

Scottish Book Trade Archive Inventory: A.nd C. Black; T. and A. Constable; Ballantyne; John Grant; John Murray; Smith, Elder & Co.; William Blackwood & Sons.

Historical Records on Canadian Publishing:  Highlights archival documents relating to Canadian publishing history, including letters, manuscripts, photographs, diaries, artwork, interviews, and financial records in collections at McMaster University Library, Queen’s University Archives, and the Thomas Fisher Rare Book Library at the University of Toronto.