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Filter: Categories of Wisconsin Historical Images
Filter: FORMAT_NUMBER_ORG of PH 2427, Box 1
Filter: Community of Troy
| Date: | 02 1977 |
|---|---|
| Description: | A man is standing behind a snow fence next to a surface aerator. Water is pouring down or up the machine, breaking the surface tension of the lake. Snow is... |
| 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... |
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