Why is Portland PDX?

Related questions

1. Is it safe in Portland Oregon?
2. What was Portland almost called?
3. What is illegal in Oregon?
4. What is the racial makeup of Portland Oregon?
5. Why is Seattle called the Emerald City?
6. Is the max free in Portland?
7. What is the black population in Oregon?
8. Is Oregon a stand your ground state?
9. Is Portland easy to get around?
10. How much money do I need to live in Portland?

Tags

1. #popular
2. #called
3. #sometimes
4. #refers
5. #another
6. #airport
7. #nickname
8. #portland
9. #association
10. #international
11. #nicknames
12. #different
13. #referred
14. #roses
15. #limits
16. #transit
17. #oregon