Possible Clues:

• Big Apple advertising center
• The advertising industry
• Nomad is drunk outside a meeting-place somewhere in New York
• Presidential thoroughfare?
• Barking is close to a site where advertising's developed
• Clio winners' workplace, maybe
• University of Wisconsin thoroughfare?
• Where you'll find TBWA Worldwide and Young & Rubicam
• New York street associated with advertising
• Made envious, an eccentric in the advertising industry