After Auschwitz was liberated, former prisoner Ben Kolton found an illustrated greeting card on a pile of debris in the camp. He took the card, and safeguarded it for decades. In 1983, the card was donated to Yad Vashem. It is dated 8 January 1945, just days before the evacuation of the camp's prisoners on the death marches, and is addressed to a prisoner who turned 33 on 8 January.