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Filter: Subject of Hats
Filter: Subject of maps
Filter: Subject of world war, 1914-1918
| Date: | 1918 |
|---|---|
| Description: | Army engineers at Camp Curtiss, demonstrating zincographic equipment. Zincography was a form of printing for large maps using zinc plates. |
| Date: | 1919 |
|---|---|
| Description: | Advertising illustration promoting the use of tractors and engine power over horses and horse-drawn implements. Shows Uncle Sam writing the words "Modern I... |
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