Are you looking for a good map of your area?  If you are like most missionaries, it helps to visualize where you work with a map.  I like to have a large political map for general reference, a map of the locations where I work, and a handy atlas to look up places.  Look for these items at a bookstore that sells school textbooks.  If your map is laminated you can write on it with a dry erase marker.  You should also take advantage of the missions maps that are available, showing percent evangelical, bible translation, church strength and other valuable information.  With Google Earth and more technical GIS software, you can create your own custom maps, showing the churches, schools, clinics, or other places you serve.  Here are some links to maps.

General Maps

Missions Maps

Online Maps

Mapping Software

More links to Maps