Portrait of Two Unidentified Men Taken By the Slee Brothers of Poughkeepsie, New York (1800′s)

Portrait of two unidentified men taken by the Slee brothers of Poughkeepsie, New York, c. 1800′s. Possibly a double exposure of one man.

Source: New York Public Library.

Stereoview Scene of Three Children and a Translucent Angel Posing Around a Tombstone Titled "The Orphans at Their Mother’s Grave" (1889)

Stereoview scene of three children and a translucent angel posing around a tombstone titled “The orphans at their mother’s grave,“ 1889. By Melander and Brother.

Source: Library of Congress.

Animated Christmas Stereoview Titled "Our Pets Dream of Old Santa Claus" (1897)

Animated Christmas stereoview titled "Our pets dream of old Santa Claus," 1897. By Strohmeyer and Wyman.

Source.

Animated Hand-Colored Double Exposure Stereoscopic Scene of a Ghost Haunting Two People (1856)

"The Ghost in the Stereoscope." Animated hand-colored double exposure stereoscopic staged scene of a ghost haunting two people, c. 1856. Published by the London Stereoscopic Company. Attributed to Hablot Knight Browne.

Source.

"Haunted Lovers," Double Exposure Animated Stereoview (1893)

"Haunted Lovers," double exposure animated stereoview, c. 1893. By the Littleton View Co.

Source.

"The Ghost in the Stereoscope" Hand-Colored Double Exposure Animated Stereoviews of Ghosts Haunting People (1856)

"The Ghost in the Stereoscope," hand-colored double exposure animated stereoviews, c. 1856. Published by the London Stereoscopic Company. Attributed to Hablot Knight Browne.

Source 1.
Source 2.