Viewing stereo photographs was hugely popular just before and just after the turn of the 20th century. These cards were made for an international market, judging from the use of six languages on the reverse of the cards. In total there are 66 photograph pairs relating to Italy. These stereo pairs can be viewed in the Underwood & Underwood stereo viewer, Ref. no. N1101. These were a gift to John and Anne Davenport from Harry Carson (real name Pat Swain) who lived in Norwich.

This is an autostereogram, often called a ‘Magic Eye’ picture. It has an unusual optical property: when viewed correctly a 3D image of the Statue of Liberty appears.

This is an autostereogram, often called a ‘Magic Eye’ picture. It has an unusual optical property: when viewed correctly a 3D image of dinosaurs appears.

This is an autostereogram, often called a ‘Magic Eye’ picture. It has an unusual optical property: when viewed correctly a 3D image of a bird in flight appears.

This is an autostereogram, often called a ‘Magic Eye’ picture. It has an unusual optical property: when viewed correctly a 3D image of a spaceship appears.

Made by Eye Think, Inc, USA. This is the brainchild of Rufus Butler Seder, president of Eye Think. When you hang the disc from a thread and spin it, you can see the cat running.