Last seen in:
- Universal - Jun 11 2024
- Wall Street Journal - Mar 1 2023 - Icy Conditions
- Family Time - Apr 11 2022
- Wall Street Journal - Jul 31 2021 - Beam Us Down, Scotty!
- Premier Sunday - King Feature Syndicate - Feb 7 2021
- Universal - Nov 19 2020
- Thomas Joseph - King Feature Syndicate - Feb 21 2020
- L.A. Times Daily - Jun 13 2017
- The Washington Post - Jun 13 2017
- Thomas Joseph - King Feature Syndicate - Jul 21 2016
Related Clues:
- See 7-Down
- Kind of vaccine
- Oral vaccine developer
- Polio scientist
- Scientist who won a 1977 Presidential Medal of Freedom
- Vaccine developer Jonas
- Vaccine developer
- Sabin's rival
- Polio fighter
- Polio vaccine discoverer
- Inoculation innovator
- Polio conqueror
- Polio immunologist Jonas
- Polio vaccine pioneer
- Famed polio fighter