The Terrifying Stereoscopic Postcards used to “Educate” Children at the beginning of the 20th century

What child doesn’t dread the unseen monsters potentially lurking under the bed, or stalking around the shadows outside the window? These stereoscopic postcards knew the peak of success during the first half of the 20th century, but they were used until the 70s and 80s. At the beginning of the 1900s the postcards were not limited to portraying monuments and landscapes, but also strange and particular things. Some of these postcards were used to teach notions to children but also to behave well. For example, this story is titled “The…

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