<a href="//commons.wikimedia.org/wiki/%D0%92%D0%BB%D0%B0%D0%B4%D0%B8%D0%BC%D0%B8%D1%80_%D0%98%D0%BB%D1%8C%D0%B8%D1%87_%D0%9B%D0%B5%D0%BD%D0%B8%D0%BD" title="Владимир Ильич Ленин">Lenin</a>, <a href="//commons.wikimedia.org/wiki/%D0%9A%D0%BB%D0%B8%D0%BC%D0%B5%D0%BD%D1%82_%D0%95%D1%84%D1%80%D0%B5%D0%BC%D0%BE%D0%B2%D0%B8%D1%87_%D0%92%D0%BE%D1%80%D0%BE%D1%88%D0%B8%D0%BB%D0%BE%D0%B2" title="Климент Ефремович Ворошилов">Voroshilov</a> (behind Lenin) and <a href="//commons.wikimedia.org/wiki/%D0%9B%D0%B5%D0%B2_%D0%A2%D1%80%D0%BE%D1%86%D0%BA%D0%B8%D0%B9" title="Лев Троцкий">Trotsky</a> (from left to right, in the center of the image) among soldiers among the delegates to the Tenth Congress of the R.C.P.(B) - the participants in the liquidation of the Kronstadt uprising. Moscow.<a rel="nofollow" class="external autonumber" href="http://www.cddc.vt.edu/marxists/archive/lenin/photo/1921/008.htm">[1]</a> 
For more on those depicted, see <a rel="nofollow" class="external text" href="https://books.google.com/books?id=EPbplhBycDQC&amp;pg=PA42">Soviet Life, v9(156), Sept 1969, pp. 42–43</a>.
Лев Яковлевич Леонидов (1889 – 1952) <a rel="nofollow" class="external autonumber" href="http://www.rulit.me/books/i-duh-nash-molod-read-54237-89.html">[4]</a>
1921-03-21
<a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%93%D0%90%D0%9A%D0%A4%D0%94" class="extiw" title="ru:РГАКФД">РГАКФД</a>, Шифр: Д-67 ч/б <a rel="nofollow" class="external autonumber" href="http://photo.rgakfd.ru/photo/67850">[2]</a>; <a href="https://ru.wikipedia.org/wiki/%D0%9C%D1%83%D0%B7%D0%B5%D0%B9_%D0%BF%D0%BE%D0%BB%D0%B8%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%BE%D0%B9_%D0%B8%D1%81%D1%82%D0%BE%D1%80%D0%B8%D0%B8_%D0%A0%D0%BE%D1%81%D1%81%D0%B8%D0%B8" class="extiw" title="ru:Музей политической истории России">Музей политической истории России</a> F.III-38054
 <a rel="nofollow" class="external autonumber" href="http://collectiononline.polithistory.ru/entity/OBJECT/85865">[3]</a>