As storms raged through Oklahoma in 2013, Martha Lillard waited them out from inside her iron lung. She is one of just dozens of polio survivors who still rely on their decades-old machines.

This episode was reported and produced by Julia Scott. It was hosted for this episode of Transistor by Genevieve Sponsler and mixed for Transistor by Erika Lantz.

You can find more information at: http://transistor.prx.org/2015/07/the-last-of-the-iron-lungs/