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Photograph

Teacher and Girls Looking at Chart

Date: 10 12 1935
Description: Teacher and two girls looking at rat growth chart.
Photograph

Dorothy Johansson in University of Wisconsin Laboratory

Date: 02 23 1945
Description: Dorothy Johansson, research assistant in zoology at the University of Wisconsin, performing an experiment using white rats to check techniques being develo...
Photograph

Wisconsin Alumni Research Foundation

Date: 01 1948
Description: Two men in a laboratory weighing rats at the Wisconsin Alumni Research Foundation.

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