This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Bridge over Cumberland River. en Stereograph of railroad bridge of the Louisville and Nashville Railroad over the Cumberland River Taken in by George Barnard loc gov George Barnard PDold Nashville fortified bridge Stereographs of the American Civil War in Tennessee Tennessee in the American Civil War