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Aerial view of Mauna Loa Observatory site, 1978 (DI02084)
Mauna Loa Observatory, 1978 (DI02083)
Eclipse expedition, San Carlos Yautepec, Mexico, 1970 (DI02078)
Climax Observatory, circa 1965 (DI02074)
Walter Orr Roberts and the Climax coronascope, circa 1945 (DI02072)
High Altitude Observatory team, 1940s and 1950s (DI02073)