Comrades from the pioneer training commune in Bialystok, 1938. Leader Frumka Plotnicka is standing second from the right. (Courtesy of Ghetto Fighters’ House Museum, Photo Archive)

Gusta Davidson (left) and Minka Liebskind at an Akiva summer camp, 1938. They both became members of the Krakow ghetto underground. (Courtesy of Ghetto Fighters’ House Museum, Photo Archive)

Tosia Altman. (Courtesy of Moreshet, Hashomer Hatzair Archives)

Courier Hela Schupper (left) and Shoshana Langer disguised as Christians on the Aryan side of Warsaw, June 26, 1943. (Courtesy of Ghetto Fighters’ House Museum, Photo Archive)

Left to right: Vitka Kempner, Ruzka Korczak, Zelda Treger. (Courtesy of Yad Vashem Photo Archive, Jerusalem. 2921/209)

One of Lonka Kozibrodska’s forged Aryan identity cards, 1943. (Courtesy of Ghetto Fighters’ House Museum, Photo Archive)

Faye Schulman assisting at an operation for a wounded partisan. (United States Holocaust Memorial Museum, courtesy of Belarusian State Museum of the History of the Great Patriotic War)

Members of the Young Guard in Wloclawek, Poland, during Lag BaOmer, 1937. Tosia Altman is at the bottom. (Courtesy of Yad Vashem Photo Archive, Jerusalem. 1592/1)

Members of a pioneer training commune in Jedrzejow, 1935. Zivia Lubetkin is standing third from the right. (Courtesy of Ghetto Fighters’ House Museum, Photo Archive)

Courier Vladka Meed on the Aryan side of Warsaw, posing as a Christian woman in Theater Square, 1944. (United States Holocaust Memorial Museum, courtesy of Benjamin [Miedzyrzecki] Meed)

Vladka Meed’s false identification card, issued in the name of Stanislawa Wachalska, 1943. (United States Holocaust Memorial Museum, courtesy of Benjamin [Miedzyrzecki] Meed)

Left to right: Couriers Tema Schneiderman, Bela Hazan, and Lonka Kozibrodska disguised as Catholic girls. Photograph taken at a Gestapo Christmas party, 1941. (Courtesy of Yad Vashem Photo Archive, Jerusalem. 3308/91)