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TitleDateType
1 Colorado River p.121960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969; 1970; 1971; 1972; 1973Image/StillImage
2 Glen Canyon p.21960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image/StillImage
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