British Newspapers 1800–1900. An inexpensive service of the British Library that searches 49 local and national titles (two million pages). Brief exerpts and full results from the Penny Illustrated and The Graphic are free.

The Athenaeum. Index to Reviews and Reviewers: 1830-1870; 1872-1886

Index of Modern Paperback Publishers. Russell Barnes, Hyde Park Books, Idaho

Histories of U.S. Publishers. Russell Barnes, Hyde Park Books, Idaho

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

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

Finales de libro: Exposici? de colofones (University of Salamanca)

Illuminated Manuscripts at the Bodleian

The Weedon Guide to Research in Victorian Publishing Records: The aim of this site is to facilitate the research of book historians through listing the known locations of the archives of British publishers, printers, booksellers and stationers active in the period 1830-1939.

Guide to Sale Catalogues in the British Library: Evans; Hodgson & Co. (and predecessors); Lewis; Phillips; Puttick & Simpson; Sotheby (including Samuel Baker and Baker & Leigh); Southgate; Wheatley.

The John Murray Archive, National Library of Scotland Manuscripts, private letters and business papers relating to the publishing house and its authors since 1768.

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

Reading University Library collections (19th & 20th c., UK): George Allen & Unwin; George Bell & Sons; A. & C. Black; the Bodley Head; Jonathan Cape; Chatto & Windus; William Clowes & Sons; Crosby Lockwood; Hogarth Press; Longman Group; Macmillan and Co.; Routledge & Kegan Paul; Secker & Warburg; Swan Sonnenschein & Co.; Virago Press.