Prof. Dube has mentioned problems with his maps. One of my favorite sets of maps for World History are:
http://www.worldhistorymaps.info/maps.html
While I have not checked out everything that is done, I like that Talessman has used a base map that shows mountains and basic relief as well as rivers. Further when I look at his maps I don't have the feeling that I am forced to look at a particular culture or region. Many of the maps we use for class are designed to accentuate whichever culture or civilization we are studying to a degree that may create an isolationist perspective on that culture.