{"version":"1.0","provider_name":"Resources \u00bb Surfnetkids","provider_url":"https:\/\/www.surfnetkids.com\/resources","author_name":"Barbara Feldman","author_url":"http:\/\/www.surfnetkids.com\/barbara\/","title":"Underground Railroad &#187; Resources \u00bb Surfnetkids","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"v76eHDeVFS\"><a href=\"https:\/\/www.surfnetkids.com\/resources\/underground-railroad\/\">Underground Railroad<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.surfnetkids.com\/resources\/underground-railroad\/embed\/#?secret=v76eHDeVFS\" width=\"600\" height=\"338\" title=\"&#8220;Underground Railroad&#8221; &#8212; Resources \u00bb Surfnetkids\" data-secret=\"v76eHDeVFS\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!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);\n\/\/# sourceURL=https:\/\/www.surfnetkids.com\/resources\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/www.surfnetkids.com\/resources\/wp-content\/uploads\/2017\/08\/underground-railroad.jpg","thumbnail_width":1035,"thumbnail_height":600,"description":"Surfnetkids recommends five Underground Railroad websites for families and classrooms. The term \"underground railroad\" was first used around 1830 to describe the loosely organized system that helped thousands of black American slaves escape"}