John Foxe's Book of Martyrs offers complete, searchable transcriptions of the 1563, 1570, 1576, and 1583 editions of Foxe's Actes and Monuments... Readers can juxtapose two editions to see Foxe's alterations. The site includes images of the foldout woodcuts, along with the title pages. Other goodies include a raft of introductory essays and detailed commentaries on the illustrations to books 10-12. See also the Foxe Digital Library Project at Ohio State University, which includes woodcuts, images of selected pages, and an exhibition catalog. There are more woodcuts from the 1610 edition at Penn's Center for Electronic Text and Image and from the 1784 edition at Kansas State University.
Alciato's (or Alciati's) Book of Emblems, first published in 1531, began the craze for emblem books. You can see the international scope of the emblem book's popularity by visiting the Emblem Project Utrecht (Dutch love emblems), the English Emblem Books Project, Glasgow University Press Emblem Website (French emblem books), the Bavarian State Library Project (international collection; German-language site), German Emblem Books, and Literatura Emblemática Hispánica (Spanish; utterly bonkers search engine). Bryn Mawr and the University of Iowa have online exhibitions from their collections. See also this scholarly exploration of the emblem book's influence on William Blake. (A different work by Alciati was discussed in this thread.)