U.S. History

What year was the polio vaccine developed by Jonas Salk?

More Questions from U.S. History
Which notorious killer did President Nixon proclaim to be guilty, half-way through his murder trial?
Reveal Answer
President Reagan was wounded in an assassination attempt by which man?
Reveal Answer
The Frisbee was invented at what college?
Reveal Answer
Who was a founding member of the N.A.A.C.P.?
Reveal Answer
Which is the is the oldest Colorado hotel?
Reveal Answer
The Hermitage Hotel was which city's first million-dollar hotel?
Reveal Answer
What was the only state that George McGovern won in the election of 1972?
Reveal Answer
Who was assassinated on November 22, 1963?
Reveal Answer