Students who happily have no knowledge of polio may get a glimpse of the devastation it wrought when they see the below picture of an iron lung used to breathe by polio victims until 1955.
For legislation and visuals relating to Dr. Jonas Salk and the development of the polio vaccine, see http://www.loc.gov/search/?in=&q=Jonas+Salk&new=true&st
The Smithsonian National Museum of American History has a wonderful exhibit entitled Whatever Happened to Polio - http://amhistory.si.edu/polio/
I found the site by searching the comprehensive Library of Congress Teacher Page for additional resources: http://www.loc.gov/teachers/additionalresources/relatedresources/ushist/chrono/postwar.html
Cynthia Szwajkowski, Ph.D.
Teaching with Primary Sources, Northern Virginia Partnership
A Program of the Library of Congress