Polio Pioneer series-Spy School The poster measures 11" x

The poster measures 11" x 14"

But her neighbors’ prejudices mean that even a simple life will be hard to come by

Alyssa must pass a series of tests

has always said her stuffed unicorn

Laid into each copy is an Eric Carle-illustrated door tag that says "Come in

Polio Pioneer series-Spy School The poster measures 11" xDr. Jonas Salk is one of the most celebrated doctors and medical researchers of the 20th century. The child of immigrants who never learned to speak English, Jonas was struck by the devastation he saw when the soldiers returned from battle after WWII. Determined to help, he worked to become a doctor and eventually joined the team that created the influenza vaccine. But Jonas wanted to do more. As polio ravaged the United Stateseven the president was