Public domain photograph of 19th-century stereoscopic card, portrait, free to use, no copyright restrictions image - Picryl description
Public domain photograph - group portrait, 20th century, free to use, no copyright restrictions image - Picryl description
J153412 U.S. Copyright Office. No. U-126298. Public domain photograph of stereoscopic card, free to use, no copyright restrictions image - Picryl description
6 people posed. J9890 U.S. Copyright Office No. 23858. Public domain photograph of stereoscopic card, free to use, no copyright restrictions image - Picryl description