Europe and the Byzantine Empire, AD 1000
<bdi><a href="https://en.wikipedia.org/wiki/en:William_Robert_Shepherd" class="extiw" title="w:en:William Robert Shepherd"><span title="American cartographer and historian (1871–1934)">William Robert Shepherd</span></a>
</bdi>
1923
[<a rel="nofollow" class="external free" href="http://www.lib.utexas.edu/maps/historical/history_shepherd_1923.html">http://www.lib.utexas.edu/maps/historical/history_shepherd_1923.html</a> <i>Historical Atlas</i>, New York: Henry Holt and Company, 1923.