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Filter: Type of Drawing
Filter: Subject of technology
| Date: | 02 15 1830 |
|---|---|
| Description: | Increase Lapham's drawing of a railroad tunnel and railroad tracks. |
| Date: | 1827 |
|---|---|
| Description: | Increase Lapham's drawing of a rig designed by Mr. Orange Dibble for removing rocks and other large debris from deep canal cuts. |
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