Viet Cong photographs of two sisters lot of two

This is a nice set of two photographs depicting the two Vietnamese girls who are likely sisters in those photographs. One is a definitely a studio shot where one of the girls is wearing an NVA  or VC Boonie hat. these two girls were likely some of the hundreds of thousands of young people from the north who were sent south to work along the Ho Chi Minh Trail and in rear base areas supporting the war effort. These are both wallet-size photographs. They are approximately 3” x 2”.