The cleveite sample from which Ramsay first purified helium — Photo Credit: By UCL Mathematical and Physical Sciences from London, UK - Clevite, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=61762600
Imperial College London — Main entrance at South Kensington Photo Credit: By Robin Webster, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=85241730
shield of Imperial College London — Photo Credit: Imperial College London.svg (by Eusebius). CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=88718905
cover art for Occult Chemistry by Annie Besant C.W. Leadbeater. — Photo Credit: By https://covers.openlibrary.org/b/id/1898857-L.jpg, Fair use, https://en.wikipedia.org/w/index.php?curid=58679272