Central Europe, 919-1125
William R. Shepherd (died 1934) <a rel="nofollow" class="external autonumber" href="http://www.columbia.edu/cu/pr/95/18753.html">[3]</a>
The Historical Atlas by William R. Shepherd, 1923. Downloaded from <a rel="nofollow" class="external autonumber" href="http://www.lib.utexas.edu/maps/historical/shepherd/central_europe_919_1125.jpg">[1]</a> at <a rel="nofollow" class="external autonumber" href="http://www.lib.utexas.edu/maps/historical/history_shepherd_1923.html">[2]</a>