https://gurneyjourney.blogspot.com/2022/06/zograscope.html
Gurney Journey: Zograscope
A zograscope is an optical device with a large lens that enhances the impression of three-dimensional depth in a flat image. It was a parlou...
gurneyjourney
https://pure.psu.edu/en/publications/mirror-box-print-novel-optical-fictions-of-the-eighteenth-century/
Mirror, box, print, novel: optical fictions of the eighteenth-century zograscope - Penn State