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Filter: Subject of Portrait photography
Filter: Subject of rats
| Date: | 07 25 1934 |
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| Description: | John Harrison, 616 Williamson Street, with part of his brood of doomed white rats. City health department ordered their extermination. |
| Date: | 02 23 1945 |
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| Description: | Dorothy Johansson, research assistant in zoology at the University of Wisconsin, performing an experiment using white rats to check techniques being develo... |
| Date: | 12 16 1951 |
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| Description: | At left, Lynn Hazelbaker is shown demonstrating the winning entry of the Madison Youth Council's rat bait box building contest built by Edward Ripp, age 14... |
| Date: | 07 15 1952 |
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| Description: | Dr. Karl Paul Link, professor of biochemistry at the University of Wisconsin, right, is pictured with Dr. Mohan Singh, director of food preservations for t... |
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