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Set of 22 color slides in 1 box labeled "Extra Lakes, Frost, Ice." Part of the Cal R. Fremling collection. Slides are mostly unlabeled and not numbered consecutively. Exact location and creation dates are unknown. Some slides based on pictures taken by Fremling, others taken by other unknown creators and used for educational illustrative purposes (noted with "Photograph/art print/etc of"). Slides show subjects including: Lake Winona (all seasons), water flow, oil pollution (1979 Lake Winona oil spill), Fremling and students, snowflake (microscopic view), ice close-ups, ice samples, Winona winter landscape, and snow and ice formations around water, trees and plants. Most slides are similar to (but not duplicates of) slides found in other boxes/containers in collection. Known slide print dates are 1959-1984.
Biologists; Science; Water Pollution; Oil spill; Mississippi River; Lake Winona; Lake Winona Park; Ice; Winter
Fremling, Cal R., "Lakes, frost and ice extras slides" (1970). Cal Fremling Slides. 21.