Related Clues:
- 37-Down's Ernie
- Shapes made by thumbs and index fingers
- Yellow pair?
- Chicago Loop carriers
- Pair of overalls?
- City trains above the street
- Railways not on street level
- A couple of million?
- Letters typed with the right ring finger
- Raised urban trains
- Scullers' pair?
- They're high up in Chi-Town
- Ernie known as "The Big Easy"
- Over-the-street transports
- Legal limits?