Each of the clues below leads to an answer that is a letter and a number, or a number and a letter, or some combination of letters and numbers.   For example, "Club originally founded for rural youth" leads to 4-H.

1. Sherlock Holmes' Baker Street address.

2. IRS Tax withholding form.

3. Second-highest peak in the world.

4. Infamous assault rifle.

5. Reggae group that had the hit "Red Red Wine."

6. Rock group named after a reconnaissance plane.

7. Military plane that has a rock group (with the hit "Love Shack") named after it.

8. Renowned ocean liner.

9. Star Wars droid (two answers).

10. 1963 film about JFK.

11. Popular steak sauce brand.

12. Company that makes scotch tape.

13. Foot race just over 6 miles.

14. Certain engine or vegetable juice.

15. James Belushi's dog movie.