| Credit: | unknown photographer |
|---|---|
| Date: | 1865.04-05 |
| Negative Size: | 8 in. x 10 in. |
| Locations & Lines: | Washington DC; District of Columbia |
| Military Units: | Signal Corps; US Army |
| Persons: | Clum (Henry R.); Fisher (Benjamin F.); Spencer (Joseph H.) |
| Structures & Establishments: | US Signal Corps Headquarters (Washington DC) |
| Sources: | Library of Congress; USAMHI – MOLLUS collection |
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