Effigy Mounds National Monument
Harpers Ferry, IA |
National Monument |
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Herbert Hoover National Historic Site
West Branch, IA |
National Historic Site |
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Lewis & Clark National Historic Trail
Eleven States: , ID,IL,IA,KS,MO,MT,NE,ND,OR,SD,WA |
National Historic Trail |
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Mormon Pioneer National Historic Trail
Various States, IL,IA,NE,UT,WY |
National Historic Trail |
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