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Start Over You searched for: Catalog Issue Year Decade 1970 - 1979 Remove constraint Catalog Issue Year Decade: 1970 - 1979 Sudoc Stem I 29.21 Remove constraint Sudoc Stem: I 29.21

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51. Tumacacori National Monument, Ariz.

52. Vicksburg National Military Park, Miss.

53. White House.

55. Chaco Canyon National Monument, N. Mex.

56. Timpanogos Cave National Monument, Utah.

57. Jewel Cave National Monument, S. Dak.

58. Lava Beds National Monument, Calif.

60. Antietam National Battlefield Site, Md.