1st Ammendment —
Photo Credit: (c) 2021 alasnome.com

Congressional Apportionment —
Photo Credit: (c) 2021 alasnome.com

Helium tube — Spectrum = gas discharge tube: the noble gas: helium He. Used with 1,8kV, 18mA, 35kHz. ≈8" length
Photo Credit: By Alchemist-hp (talk) (www.pse-mendelejew.de) - Own work, GFDL 1.2, https://commons.wikimedia.org/w/index.php?curid=9597822

A xenon-filled discharge tube glowing light blue — Spectrum = gas discharge tube: the noble gas: xenon Xe. Used with 1,8kV, 18mA, 35kHz. ≈8" length.
Photo Credit: By Alchemist-hp (talk) (www.pse-mendelejew.de) - Own work, FAL, https://commons.wikimedia.org/w/index.php?curid=9598160

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

Krypton gas discharge tube —
Photo Credit: By Pslawinski, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=381576

Xenon —
Photo Credit: (c) 2021 ShaneBow.com

Krypton —
Photo Credit: (c) 2021 ShaneBow.com

Neon —
Photo Credit: (c) 2021 ShaneBow.com

Morris William Travers —
Photo Credit: https://royalsocietypublishing.org/doi/pdf/10.1098/rsbm.1963.0016