Using false papers to conceal their Jewish identities, the young women known as the kashariyot smuggled documents, weapons, newspapers, money, medical supplies, news, forged identity cards, ammunition—and other Jews—into and out of the ghettos, providing a lifeline of information and secret services for their fellow Jews during the Holocaust. Pictured here are three of these courageous couriers, (L to R): Tema Sznajderman, Bela Hazan and Lonka Korzybrodska, all members of the He-Halutz-Dror movement. Hazan and Korzybrodska were captured and in 1942 sent to Auschwitz, where Korzybrodska later died in her friend's arms. Hazan was liberated by the Americans in 1945. Sznajderman, who had continued to carry out dangerous missions on behalf of the resistance, was killed in the Warsaw Ghetto in 1943.