Why is the green book called The Green Book?

Related questions

1. Does Mahershala Ali play the piano in the movie The Green Book?
2. Was the Green Book real?
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4. How much is Mahershala Ali worth?
5. Did Ali in Green Book play the piano?
6. What does sundown town mean?
7. Did Black Panther win any Oscars?
8. What was the purpose of the Negro Motorist Green Book?
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10. When did blacks get the vote?

Tags

1. #overcoming
2. #muted
3. #travel
4. #guide
5. #motorist
6. #making
7. #americans
8. #aggravation
9. #message
10. #events
11. #reference
12. #title
13. #african
14. #powerful
15. #vacation
16. #green
17. #negro
18. #prejudice
19. #published
20. #depicts
21. #promised
22. #without
23. #after
24. #century
25. #about