Capitol of the U.S. at Washington.
Picryl description: Public domain image of a historical building, landmark architecture, world heritage, free to use, no copyright restrictions.
Elevation of the aqueduct over the head of Cow Run and Transverse sect...
Public domain image of an arch structure, bridge, historic place ruins, classical architecture, free to use, no copyright restrictions - Picryl description
Plan of the aqueduct over Elk Creek Ch: & Del. Canal feeder
Public domain scan of a architecture diagram, settlement map, plan, or drawing, free to use, no copyright restrictions - Picryl description.
South, or downstream elevation of the Aqueduct over Elk Creek
Picryl description: Public domain image of an arch bridge, stone structure, architecture, free to use, no copyright restrictions.
Plan of the aqueduct over Elk Creek Ch: & Del. Canal feeder
Public domain photograph of 19th-century drawing, free to use, no copyright restrictions image - Picryl description
Transverse section of the aqueduct over Elk Creek
Public domain scan of an architecture diagram, architectural drawing, building plan, or design, free to use, no copyright restrictions - Picryl description.
South, or downstream elevation of the Aqueduct over Elk Creek
Public domain photograph of 19th-century drawing, free to use, no copyright restrictions image - Picryl description