The Monument. Concord MA. 19th century sterescopic views.
Public domain photo of a monument, historic place, 19th century, free to use, no copyright restrictions image - Picryl description.
During the Civil War, photographers produced thousands of stereoviews. Stereographs were popular during American Civil War. A single glass plate negative capture both images using a Stereo camera. Prints from these negatives were intended to be looked at with a special viewer called a stereoscope, which created a three-dimensional ("3-D") image. This collection includes glass stereograph negatives, as well as stereograph card prints.