The famous institution has taken its collection of 19th century stereograms and given viewers the opportunity to turn them into the popular internet meme.

Wonder how folks were entertaining themselves before the dawn of the animated GIF? In 1861, it was with stereograms, a pair of still photographs of an identical subject, shot from slightly different angles to mimic the vantage point of the left and right eye. Viewed through a stereoscope, the final image appeared in 3D. A discovery made by NYPL patron, Joshua Heineman unearthed that these stereographs could be converted into a modern, digital form of entertainment à la the GIF.

Four years ago, during his final year in college, Heineman uncovered the 19th century GIF. He explains:

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