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Start Over You searched for: Publish Year Decade 1960 - 1969 Remove constraint Publish Year Decade: 1960 - 1969 Sudoc Stem I 29.21 Remove constraint Sudoc Stem: I 29.21

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11. Chalmette National Historical Park, La.

14. Colonial National Historical Park, Va.

15. Custer Battlefield National Monument, Mont.

16. De Soto National Memorial, Fla.

17. Death Valley National Monument, Calif.

19. Dinosaur National Monument, Utah-Colo.

20. Edison National Historic Site, N.J.