| Credit: | unknown photographer |
|---|---|
| Date: | 1861-1865 |
| Negative Size: | 10 in. x 13 in. |
| Equipment: | Barbette carriage (center pintle-iron); cannon; Rodman gun; tompion |
| Locations & Lines: | Fort Columbus (Governors Island NY); Governors Island NY; New York; New York NY |
| Military Units: | US Army |
| Sources: | National Archives |
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