Did you see the piece in the New York Times on the new discipline of spatial history, which combines GIS map-making with historical research? Genealogists are already on the trail of the new insights spatial history can provide. The article, With Digital Mapmaking, Scholars See History, provides some fascinating detail on new research on the decisions made at the Battle of Gettysburg. New projects are underway on the Dust Bowl and the Salem Witch Trials.
A link to the North American Religion Atlas also looks promising for family history research. To read more about spatial humanities, visit these links: