Related Clues:
- Don or Phil of 50's-60's pop
- ___ Brothers
- Angola's Savimbi
- Microbiologist Salk
- Rock's Phil or Don
- Dr. Salk
- Virologist Salk
- Vaccine developer Salk
- Vaccine creator Salk
- Salk of vaccine fame
- First name of a vaccine pioneer
- Virologist's first name
- Either ''Wake Up Little Susie'' singer
- 'Cathy's Clown' brothers
- Villain in 'Martin Chuzzlewit'