Spectrum analysis : six lectures, delivered in 1868, before the Society of Apothecaries of London / by Sir Henry E. Roscoe ;… https://www.rawpixel.com/image/13969825/image-book-art-patternFree Image from public domain licenseBook cover of colored wood-engraved plate by Alexander Francis Lydon. Digitally enhanced from our own 1884 edition plates of… https://www.rawpixel.com/image/10243624/image-plant-person-artFree Image from public domain licenseElectro aromatic belt patented against sea sickness (in or before c. 1860) by Alphonse L E Mosselman https://www.rawpixel.com/image/13752735/photo-image-gold-sea-public-domainFree Image from public domain licenseMedaillon met vazen en pelgrimsstaven (1725 - 1750) by anonymous https://www.rawpixel.com/image/13791712/medaillon-met-vazen-pelgrimsstaven-1725-1750-anonymousFree Image from public domain licenseSketches in the Malay archipelago. Album of watercolours and photographs made and collected by J.E. Taylor. https://www.rawpixel.com/image/14008316/image-background-frame-bookFree Image from public domain licenseCommentariorum urbanorum libri XXXVIII. Item Oeconomicus Xenophontis ab eodem latio donatus. https://www.rawpixel.com/image/13977976/image-white-background-bookFree Image from public domain license