Catan: Indiana & Ohio
This map was a promotional give away at GenCon '09. It was done in commemoration of GenCon and Origins being held in Indiana and Ohio, respectively. There were two other maps given away: 'Settlers of Hesse' and 'North Rhine - Westphalia.'
It is a pre-printed map that requires the base game to play.
From the map:
In order to settle this map, you need the game pieces and cards from The Settlers of Catan game. You will also need (separate/different) markers for gold pieces and victory points (VPs): you can use chips from the Seafarers expansion, or, alternatively, coins.