The accepted proposal of <a href="//commons.wikimedia.org/wiki/Lavrentiy_Beria" class="mw-redirect" title="Lavrentiy Beria">Lavrentiy Beria</a> to execute former Polish army and police officers in NKVD prisoner of war camps and prisons, 5 March 1940
Лаврентий Павлович Берия
<ul><li>РГАСПИ  Ф. 17 оп. 166 дело 621 лист 130. Подлинник. Scan from <a rel="nofollow" class="external free" href="http://katyn.ru/index.php?go=Pages&amp;in=view&amp;id=6">http://katyn.ru/index.php?go=Pages&amp;in=view&amp;id=6</a></li>
<li>This is a colour photocopy of official document residing in the Russian archive RGASPI, a b/w copy of which had been legally transferred into the property of Polish Government, and first published in Poland in 1992.</li></ul>