2 results containing "Surveying equipment."
[Petersburg, Va. Headquarters, 50th New York Engineers]
1864 November. | 1 negative | O'Sullivan, Timothy H., 1840-1882
LC-B817- 7059 [P&P] LOT 4172-D (corresponding print) | LC-DIG-cwpb-03675 (digital file from original neg.)
[Chattanooga, Tenn., vicinity. Tripod signal erected by Capts. Dorr and Donn of U.S. Coast Survey at Pulpit Rock on Lookout Mountain]
[1864?] | 1 negative (2 plates)
LC-B811- 3661 [P&P] | LC-DIG-cwpb-03453 (digital file from original neg. of left half)