1.0A.I.D.A. - Associazione Italiana di Aerofilateliahttps://www.aida-aerofilatelia.org/en/AIDA Webmasterhttps://www.aida-aerofilatelia.org/en/author/aidawbm/rich600338<blockquote class="wp-embedded-content" data-secret="AoR2WTZhg0"><a href="https://www.aida-aerofilatelia.org/en/precursori/">Precursors</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.aida-aerofilatelia.org/en/precursori/embed/#?secret=AoR2WTZhg0" width="600" height="338" title="“Precursors” — A.I.D.A. - Associazione Italiana di Aerofilatelia" data-secret="AoR2WTZhg0" 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.aida-aerofilatelia.org/wp-includes/js/wp-embed.min.js </script> Here described are the so-called “aerial precursors”, by which we mean everything that, from the point of view of direct documentation, is left to remember or commemorate facts and events that really happened or presumed to be so and recorded through the original period documents.Among them can be included the messages or leaflets launched fromContinue readinghttps://www.aida-aerofilatelia.org/wp-content/uploads/2021/02/aidanews.jpg15475