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Filter: County of Milwaukee
| Date: | 1912 |
|---|---|
| Description: | Dr. A. Rudolph Silverston's vacu-aerial flying machine, as seen from the rear. Handwritten at top: "Rear View." Caption at bottom reads: "Silverston's Milw... |
| Date: | 11 12 1944 |
|---|---|
| Description: | Emil Andel of the American Bowling Congress demonstrates an automatic foul detector in a bowling alley. |
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