You can find some of my maps (but not only maps) in vector format. Vector illustration can be scaled to any size without loss of resolution. Below link to file at shutterstock:
http://www.shutterstock.com/pic.mhtml?id=74130013
Welcome. This is michal812 official blog. You can find here some of my illustrations, photos and films. All of them and even more you can find at biggest stock sites: shutterstock, fotolia, dreamstime, istock, 123rf, bigstock, veer, depositphotos, etc.