History of polio vaccination
In pictures: The history of polio - BBC News
History of polio vaccination
How A Grassroots Movement Helped End The Polio Epidemic | Texas Standard
History of polio - BBC News
What You Need to Know About the Polio Resurgence | ID Care Infectious Disease Doctors
Defeating Polio, The Disease That Paralyzed America : NPR History Dept. : NPR
History of the Polio Vaccine | Britannica
Polio Timeline - Office of NIH History and Stetten Museum
History of polio vaccination
History of Polio – GPEI
The History of the Polio Vaccine and Animal Testing | PETA
History of Polio – GPEI
The polio outbreak of 1955: Lessons from an epidemic - Boston Children's Answers
Polio (U.S. National Park Service)
History of Polio – GPEI
Wiping Out Polio: How The U.S. Snuffed Out A Killer : Shots - Health News : NPR
The history of polio and the vaccines that nearly eradicated it - The Washington Post
History of polio - Wikipedia
The Polio Epidemic in Canada - Canada's History
Polio | History of Vaccines
Polio Timeline - Office of NIH History and Stetten Museum
The polio outbreak of 1955: Lessons from an epidemic - Boston Children's Answers
History of polio: Outbreaks and vaccine timeline
Wiping Out Polio: How The U.S. Snuffed Out A Killer : Shots - Health News : NPR
