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Filter: Categories of Wisconsin Historical Images
Filter: Subject of Research
Filter: Creator Name of Tvedt, Dean
Filter: Year of 1900-1999
| Date: | 02 1977 |
|---|---|
| Description: | A man is kneeling on the ice and snow at Potter's Lake. He is running a machine that is testing the oxygen levels in the water, while recording the results... |
| Date: | 10 1978 |
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| Description: | Two men are standing on the rocky shoreline of the Sheboygan River. One man is holding a shovel in his right hand and a glass jar in his left hand. The oth... |
| Date: | 10 1978 |
|---|---|
| Description: | Two men are kneeling on the ground. One man is holding a shovel while the other man is scooping dirt from the shovel into a glass jar. They are measuring P... |
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