Lawrence Block novels - good 'airport' reads

If you want to kill time at an airport (rather than "Angry Birds") or in the air, Lawrence Block's Keller books are good fun. The contract killer who is also a hard core philatelist tickled my funny bone. Dot, his dry-as-a-chip booking agent is a great character. The books include a travelogue of US places as well as fascinating historical details - courtesy of our (anti)hero's stamp obsession.
He may be the Enid Blyton of NYC crime novels but a good read is a good read. Check your brain in at the library desk and enjoy...