Used Item.Box or package may not be in the best condition. Have Question Just Ask? Slide viewers have a rich history spanning over a century. Initially, in the late 19th century, lantern slide projectors were used. In the mid-20th century, handheld viewers gained popularity, evolving into compact, battery-operated models. With the advent of digital imaging, slide viewers transformed into sleek, portable devices, allowing easy viewing and sharing of slides and digital images. Today, slide viewers continue to play a role in preserving and appreciating photographic memories. Listing and template services provided by inkFrog