LeConte Seal. Tongass National Forest, Alaska. Original public domain image from Flickr https://www.rawpixel.com/image/3388306/free-photo-image-forest-nature-alaskaFree Image from public domain licenseGeorges Louis Leclerc, Conte de Buffon (1707-1788). Oil painting. https://www.rawpixel.com/image/13960359/georges-louis-leclerc-conte-buffon-1707-1788-oil-paintingFree Image from public domain licenseGiuseppe Balsamo, Count Cagliostro. Colour mezzotint by J. B. Chapuy after L. Brion de La Tour the younger. https://www.rawpixel.com/image/13957496/image-face-person-artFree Image from public domain license3/4 length view of a standing woman wearing a large lozenge-shaped black hat, black cloak, and black dress with wide ruffled… https://www.rawpixel.com/image/7650178/image-vintage-art-public-domainFree Image from public domain licenseNicolas Copernicus explaining his planetary system to Alexander VI and artists of the Papal court. Photomechanical… https://www.rawpixel.com/image/14005181/image-person-art-clothingFree Image from public domain licenseUgolino, his sons and grandsons in a cell facing death by starvation. Engraving by A. Raimbach after Sir J. Reynolds. https://www.rawpixel.com/image/13977266/image-face-person-artFree Image from public domain licenseGiovanni Battista Paletta. Line engraving by A. Conte after M. Bellerio. https://www.rawpixel.com/image/14004054/giovanni-battista-paletta-line-engraving-conte-after-bellerioFree Image from public domain licenseGiuseppe Balsamo Cagliostro. Stipple engraving by F. Bonneville, 1796. https://www.rawpixel.com/image/13989300/giuseppe-balsamo-cagliostro-stipple-engraving-bonneville-1796Free Image from public domain licenseFrancesco, Count Roncalli-Parolino. Line engraving by Caterina Piotti-Pirola. https://www.rawpixel.com/image/13984054/francesco-count-roncalli-parolino-line-engraving-caterina-piotti-pirolaFree Image from public domain licenseEvangelista Torricelli. Line engraving by A. Hercolani, 1834. https://www.rawpixel.com/image/13995232/evangelista-torricelli-line-engraving-hercolani-1834Free Image from public domain licenseGiuseppe Balsamo Cagliostro. Line engraving by C. Guérin, 1781, after himself. https://www.rawpixel.com/image/13988021/giuseppe-balsamo-cagliostro-line-engraving-guerin-1781-after-himselfFree Image from public domain licenseGiuseppe Balsamo Cagliostro. Stipple engraving by F. Bonneville, 1796. https://www.rawpixel.com/image/13991076/giuseppe-balsamo-cagliostro-stipple-engraving-bonneville-1796Free Image from public domain licenseThe painter and monk Fra Angelico kneels in prayer next to an easel painting of the Virgin. Engraving by John Le Conte after… https://www.rawpixel.com/image/13993248/image-face-person-crossFree Image from public domain licenseGiuseppe Balsamo Cagliostro. Stipple engraving by R.S. Marcuard, 1786, after F. Bartolozzi. https://www.rawpixel.com/image/14016343/image-face-person-artFree Image from public domain licenseJames Sheridan Muspratt. Stipple engraving by J. Le Conte after Feard & Beard. https://www.rawpixel.com/image/14020104/james-sheridan-muspratt-stipple-engraving-conte-after-feard-beardFree Image from public domain licenseGiuseppe Balsamo, Count Cagliostro. Stipple engraving by J. Brown, 1842, after F. Bartolozzi. https://www.rawpixel.com/image/13975510/image-face-person-artFree Image from public domain licenseGiovanni Battista Paletta. Line engraving by A. Conte after M. Bellerio. https://www.rawpixel.com/image/13998940/giovanni-battista-paletta-line-engraving-conte-after-bellerioFree Image from public domain licenseVincenzo Dandolo. Stipple engraving by J. D. Nargeot after Augustine Fauchery. https://www.rawpixel.com/image/14001988/vincenzo-dandolo-stipple-engraving-nargeot-after-augustine-faucheryFree Image from public domain licenseGiuseppe Giorgi. Line engraving by A. Hercolani di Forlì, 1825, after L. Massa. https://www.rawpixel.com/image/13991493/giuseppe-giorgi-line-engraving-hercolani-forli-1825-after-massaFree Image from public domain licenseGiuseppe Balsamo Cagliostro. Stipple engraving by R.S. Marcuard, 1786, after F. Bartolozzi. https://www.rawpixel.com/image/13973403/image-face-person-artFree Image from public domain licenseSaint Ignatius of Loyola. Line engraving by J. Caron, 1842, after J. del Conte. https://www.rawpixel.com/image/14014070/saint-ignatius-loyola-line-engraving-caron-1842-after-del-conteFree Image from public domain license