Related Clues:
- 1898 chemical discovery
- Sign material, sometimes
- Lamp gas
- 10 on a table
- Sign of the fifties?
- Like Broadway lights
- Element obtained only from air
- Gas in some very bright lights
- Times Square flasher
- Times Square illuminator
- City light found in the four longest Across answers
- It's below helium on the periodic table
- Deion's nickname
- Lady Gaga album '___ This Way'
- Bar sign light