Maps are excellent tools, fun and interesting, but can be intimidating, especially for those new to genealogy. Today's technology has made maps more accessible and the task of working with maps considerably easier; and yes, even fun. In his article, "Mapping the World and Its Data," Larry Naukam gives us a primer on super-imposing old maps onto Google Earth for a then-and-now comparison ─ all for free.. If you haven't yet discovered Google Earth, it is satellite imagery that lets you zoom in to view virtually any place on the planet. Superimposing an old map onto Google Earth allows you to walk the land, so to speak and gain new insights into your family history.