Related Clues:
- Some are numbered in N.Y.C.
- In-flight announcements, for short
- CA and CO
- Airport guesses, for short
- Bourbon and Wall: Abbr.
- Geo. and Jude, e.g.
- Road map lines: abbr.
- Letters that look like H
- Some NYC block separators
- HHH, in Athens
- B'way crossers
- LAX list
- Urban rds.
- Teresa and Helena: Abbr.
- Guesstimates at J.F.K.