Map of Wołyń Voivodeship / Volhynian Voivodeship before the onset of German and Soviet invasion of Poland in September 1939.
<a href="//commons.wikimedia.org/wiki/User:Poeticbent" title="User:Poeticbent">Poeticbent</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Poeticbent" title="User talk:Poeticbent">talk</a><span style="white-space:nowrap"> <b>·</b></span> <a href="//commons.wikimedia.org/wiki/Special:Contributions/Poeticbent" title="Special:Contributions/Poeticbent">contribs</a>)
Own work, data by Władysław Siemaszko and Ewa Siemaszko, "Ludobójstwo dokonane przez nacjonalistów ukraińskich na ludności polskiej Wołynia 1939-1945", Warszawa 2000