From the publisher's website:-
The first expansion maps for Age of Industry, Japan and Minnesota. Larry Whalen has designed the Japan map, while Kevin Beckey has designed the Minnesota map. Both feature little twists to the original system, making them feel different from the original maps. The expansion is one double-sided board with Japan on one side and Minnesota on the other.'
Guru View : Both maps are excellent developments of the base game, Japan chalenging because of its georgraphy and its lack of raw materials, Minnesota because of the domination of chicago on the economy and the new rules for Iron sale. If the quality of future expansions matches the first we could have a gaming dynasty as good as Power Grid on our hands.