National Parks in Iowa

circa 1930:  The birthplace of Herbert Hoover (1874 - 1964), the 31st President of the United States, in West Branch, Iowa.  (Photo by Hulton Archive/Getty Images)

circa 1930: The birthplace of Herbert Hoover (1874 - 1964), the 31st President of the United States, in West Branch, Iowa. (Photo by Hulton Archive/Getty Images)

Photo by: Hulton Archive

Hulton Archive

Effigy Mounds

National Monument, Harpers Ferry, IA

Herbert Hoover

National Historic Site, West Branch, IA

Lewis & Clark

National Historic Trail, ID, IL, IA, KS, MO, MT, NE, ND, OR, SD, WA

Lewis and Clark Trail marker on North Interstate 29 Iowa USA - sign, signpost, direction, marker, travel. (Photo by: Universal Images Group via Getty Images)

Lewis and Clark Trail marker on North Interstate 29 Iowa USA - sign, signpost, direction, marker, travel. (Photo by: Universal Images Group via Getty Images)

Photo by: UniversalImagesGroup

UniversalImagesGroup

Mormon Pioneer

National Historic Trail,  IL, IA, NE, UT, WY

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