div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: University of Wisconsin–MadisonimageslibrarywisceduHistoryEFacsGerReconomg1950American planes fly over the Soviet Zone only in the established air corridors to Berlin src=https:reader035vdocumentsmxreader035viewer202206250961064ff6dcdcb7541352ea3ehtml5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: University of Wisconsin–MadisonimageslibrarywisceduHistoryEFacsGerReconomg1950American planes fly over the Soviet Zone only in the established air corridors to Berlin src=https:reader035vdocumentsmxreader035viewer202206250961064ff6dcdcb7541352ea3ehtml5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv