Map depicting territories of Czechs and Slovaks in Austria-Hungary in 1917.
Unknown author<span style="display: none;">Unknown author</span>
<a href="//commons.wikimedia.org/wiki/File:Edvard_Bene%C5%A1_%E2%80%93_Bohemia%27s_case_for_independence.pdf" title="File:Edvard Beneš – Bohemia's case for independence.pdf">File:Edvard Beneš – Bohemia's case for independence.pdf</a>, page 130