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Permanent stands specialize in maps and mid-20th century ads; altered antiques such as tin ceiling mirrors; rare books and vintage lantern slides.

This time Joe took the photographs himself, converting the best of them to glass lantern slides, so that they could be projected at public lectures or in presentations to governmental bodies.

At first he showed magic lantern slides, some of which “dissolved” between two static images to create an illusion of movement.

They held meetings in churches and schoolyards, using plays and even magic lantern slide shows to teach freed slaves their rights.

As Joachim Kalka’s “lantern slides” remind us, the fierce hatreds, economic disparities and zeal for new technologies that characterize life today are hardly new.