In 1968, Heartfield was scheduled to attend an exhibition in Czechoslovakia on a temporary visa. On the day he left the GDR, he spent some time in the morning dictating and signing a three-page will with his third wife, Gertrud. Everything the prolific artist owned, including all of his surviving art, was to be inherited by Gertrud. There was no mention of his children, Tom George Heartfield or Eva Sondermeijer. There was also no mention of Heartfield’s beloved brother, Wieland Herzfelde. It was Wieland, along with Willi Münzenberg, who can reasonably be considered responsible for the vast majority of Heartfield’s professional success as an artist.Tom George Heartfield had supported his father financially and emotionally throughout his life. In letter, Gertrud later apologized to Tom. She wrote that, because of “the state,” Tom could not be mentioned in the will.Shortly after signing this will, John Heartfield passed away in April of 1968 in East Berlin. He is buried near the home of Bertolt Brecht.