CDL California Digital Library CDL link to "A Dictionary of the Printers and Booksellers who were at work in England, Scotland and Ireland from 1668 to 1725 (1922)]'
CDL California Digital Library Digitised copies of useful reference books. This link "List of Catalogues of English Book Sales, 1676 - 1900, now in the British Museum (1915)"
The British Armorial Bindings A comprehensive catalogue of all the coats of arms, crests, and other heraldic devices that have been stamped by British owners on the outer covers of their books, together with the bibliographical sources of the stamps.
Incunabula Short Title Catalogue (ISTC) The Incunabula Short Title Catalogue is the international database of 15th-century European printing created by the British Library with contributions from institutions worldwide.