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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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251. Chiricahua National Monument, Ariz.

252. Colorado National Monument.

253. Coronado National Memorial.

254. Cowpens National Battlefield Site, S.C.

256. Devils Postpile National Monument, Calif.

257. Dinosaur National Monument, Colo. and Utah.

259. Effigy Mounds National Monument, Iowa.