1863
Timothy H. O'Sullivan, 1864
Alexander Gardner, 1865
Alexander Gardner, 1863
Timothy H. O'Sullivan, 1863
Alexander Gardner, 1867
Timothy H. O'Sullivan, 1873
Timothy H. O'Sullivan, 1870
Timothy H. O'Sullivan, 1867
Alexander Gardner, 1864
![[On the Railroad near Warrenton Junction, Virginia]](https://media.getty.edu/iiif/image/e26781bf-7a72-410b-a7f2-39d04117f169/full/843,/0/default.jpg)
![[Pontoon Bridge at Topeka, Kansas]](https://media.getty.edu/iiif/image/39348856-a382-416f-907d-d018b87210ed/full/843,/0/default.jpg)
![[Donkey train of the U.S. Darien Expedition at San Blas Bay.]](https://media.getty.edu/iiif/image/85add180-9046-47bf-aa73-25351068dc81/full/843,/0/default.jpg)
