Martha Lillard, last U.S. polio patient using iron lung, dies at 78 in Oklahoma CTV NewsMartha Lillard, last US polio patient using iron lung, dies at 78 in Oklahoma CNNLast U.S. Polio Survivor in an Iron Lung Dies After the Machine Began to Break Down and No One Could Repair It Yahoo News CanadaLast American to use an iron lung dies at 78 years old after childhood polio diagnosis Fox NewsMartha Lillard, last US polio patient using iron lung, dies The Times of India