Folger Shakespeare Library (Creative Commons: Attribution-ShareAlike 4.0 License)
This database offers high resolution images from the Folger Shakespeare Library, including books, theater memorabilia, manuscripts, and art. Users can show multiple images side-by-side, zoom in and out, view cataloging information when available, export thumbnails, and construct persistent URLs linking back to items or searches.
Schoenberg Center for Electronic Text & Image (Public Domain and Copyright Content)
Over 2,000,000 images from various collections of rare books, manuscripts, papyri, photographs and sheet music are available for your viewing. Each collection has its own website that is unrestricted in the interests of knowledge and learning.
This 16th-century engraving from a set of 20 called Nova Reperta (New Discoveries) celebrates eyeglasses as one of the great inventions of the modern world.