Historical Baltic Lands Maps
It is difficult to see the all the changes that affected the Baltic areas.
Therefore, you may want to look at the following maps: http://www.lib.utexas.edu/maps/historical/baltics.htmlhttp://www.lib.utexas.edu/maps/historical/baltics.html . This covers the period 1000 AD - 1809 AD. This site http://feefhs.orghttp://feefhs.org Map Room, scroll to Baltic Maps, coveres 1882.
Contemporary maps may be found on Latvia GenWeb or through http://www.google.com/http://www.google.com/.