Giangiacomo Feltrinelli son still run "Feltrinelli Editore" together. In the post-war period Feltrinelli had joined the Italian Socialist Party (PSI) before moving to the Italian Communist Party (PCI), which he left in 1957. Feltrinelli spent the Sixties travelling the world and making links with various radical Third World leaders and guerrilla movements. In the Cuban house of the photographer Alberto Korda, Feltrinelli saw and was given the iconic photo of Che Guevara now seen everywhere. Within six months of Che’s assassination, Feltrinelli sold over two million posters bearing the image. In 1964, Feltrinelli met the leader of the Cuban revolution, Fidel Castro.
Guerrillero Heroico Korda continued to print both versions of the image up until his death. To take the photograph, Korda used a Leica M2 with a 90 mm lens, loaded with Kodak Plus-X pan film. In speaking about the method, Korda remarked that "this photograph is not the product of knowledge or technique. It was really coincidence, pure luck." As a lifelong communist and supporter of the Cuban Revolution until his death, Alberto Korda claimed no payment for his picture. A modified version of the portrait through the decades was also reproduced on a range of different media, though Korda never asked