Neon gas-discharge lamps forming the symbol for neon — Photo Credit: By Pslawinski, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=381579
William Ramsay's Nobel Prize certificate — Photo Credit: By Sofia Gisberg (1854-1926) - Museums and Collections, University College London, Public Domain, https://commons.wikimedia.org/w/index.php?curid=29333066
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
