Across
- 4. Improved the microphone by making it lighter, small and less expensive
- 6. First woman to hold a pilot's license
- 9. astronaut
Down
- 1. First person to perform open heart surgery
- 2. First man to see the North Pole
- 3. Food preservation
- 5. Poet honored by George Washington
- 7. Banneker Urban Planner
- 8. Developed the gold tee