This printable word search puzzle on the topic of US History (General) contains 15 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
Biological Studies
Salk Institute
Thomas Francis
Man Unfolding
Flu Epidemic
World War Two
Albert Sabin
Mount Sinai
Virologist
Eisenhower
Pittsburgh
Children
Vaccine
Polio
Salk