1.0Great Performanceshttps://www.pbs.org/wnet/gperfJulia Corbetthttps://www.pbs.org/wnet/gperf/author/corbettj/rich600338<blockquote class="wp-embedded-content" data-secret="bB3YFDsvGr"><a href="https://www.pbs.org/wnet/gperf/legacy-jan-karski-eius7t/14609/">The Legacy of Jan Karski</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.pbs.org/wnet/gperf/legacy-jan-karski-eius7t/14609/embed/#?secret=bB3YFDsvGr" width="600" height="338" title="“The Legacy of Jan Karski” — Great Performances" data-secret="bB3YFDsvGr" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.pbs.org/wnet/gperf/wp-includes/js/wp-embed.min.js </script> https://www.pbs.org/wnet/gperf/files/2023/03/lDIAr7B-asset-mezzanine-16x9-eNtfSba.jpg19201080Explore the legacy of Jan Karski, who worked with the Polish Underground and risked his life to carry the first eyewitness reports of the Holocaust to the Western world, and ultimately, the Oval Office.