Mothers Let Them Go WWII Evacuation SchemeOriginal vintage World War Two propaganda poster Mothers let them go give them a chance of greater safety and health Ministry Of Health Evacuation Scheme featuring a black and white photograph of two children sitting in front of a brick wall, the young boy looking out to the viewer and protecting his younger sister with his arm around her, the text against a blue background above and below. The evacuation during WWII known as Operation Pied Piper