| Credit: | unknown photographer |
|---|---|
| Date: | 1865 |
| Locations & Lines: | Alexandria & Washington Railroad (A&W); District of Columbia; Potomac River; Virginia; Washington DC |
| Military Units: | US Military Railroads (USMRR); US Army |
| Structures & Establishments: | Old A&W Long Bridge (Potomac River) |
| Sources: | National Archives |
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