The Kreh brothers were dry-goods wholesalers who ran a mail-order business out of Genoa, Italy. They sold religious items, etrogim (citron) and lulavim (palm fronds), for the Jewish holiday of Succoth. The etrogim grown in Genoa were considered the best in the world, and the brothers shipped them all over Europe, including to Poland. Because they could not send money internationally, many Polish Jews sent cards and letters to the brothers during the war, asking them to send the etrogim with promise of payment after the war. If the brothers sent the packages, they rarely got through.

This postal card was sent to the Kreh Brothers from Warsaw. It has a machine Warsaw C1 cancel dated March 10, 1942 and a small rectangular Judenrat Warschau (Warsaw Jewish Council) stamp.