The religious situation in central Europe about 1618
William R. Shepherd (died 1934) <a rel="nofollow" class="external autonumber" href="http://www.columbia.edu/cu/pr/95/18753.html">[3]</a>
1926
The Historical Atlas by William R. Shepherd, 1926. Downloaded from <a rel="nofollow" class="external autonumber" href="http://www.lib.utexas.edu/maps/historical/shepherd/central_europe_relig_1923.jpg">[1]</a> at <a rel="nofollow" class="external autonumber" href="http://www.lib.utexas.edu/maps/historical/history_europe.html">[2]</a>