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| 1 | Title: | Report of the judges of new inventions and machines: at the tenth exhibition of the Massachusetts Charitable Mechanic Association, on John Ridgway's vertical revolving battery, awarding a gold medal | |
| Creator: | Massachusetts Charitable Mechanic Association | ||
| Publication: | Prentiss & Deland, printers, Boston,1865. | ||
| Call #: | VF440 R5M | ||
| Extent: | 8 p. 23 cm. | ||
| Subjects: | Ridgway's revolving battery | ||
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