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Description

Set of 4 color slides in 1 container labeled "Slides from Rada Mayfly Graphs." 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 graphs and tables concerning water quality (Upper Mississippi River specified in one slide), over time spans ranging from 1934-1990. Slide print dates are unknown, probably around 1985-1990.

Publication Date

1970

Publisher

Library

City

Winona, Minnesota

Keywords

Biologists; Science; Upper Mississippi River

Department

Special Collections-Library

Notes

The date of these slides are unknown. A default date of 1970 is a place holder.

Unique Identifier

2011.003.0034

Slides from Rada/Mayfly graphs slides

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