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Filter: FORMAT_DIMENSIONS of 5 x 7 inches
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| Date: | 1926 |
|---|---|
| Description: | Dr. Stephen Babcock with an electric centrifuge butterfat tester. |
| Date: | 1889 |
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| Description: | View of pharmaceutical processing equipment in the Pharmacie Werner. The pharmacy was located in Boulay, France. |
| Date: | 1930 |
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| Description: | Telescope at Washburn Observatory with man at controls. |
| Date: | 1905 |
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| Description: | Robert E. Clough, member of the Menomonie High School class of 1905, depicted as an inventor, using a large drill press. Part of a yearbook created by clas... |
| Date: | 02 13 1862 |
|---|---|
| Description: | Letter describing gun invention and Bradford's intentions for improvements. |
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