A Google search for 'Magic Lantern slide' will return about 6,040,000 results in 0.38 seconds
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The Magic Lantern Society based in the UK.

 
 

Luikerwaal extensive information on Magic Lanterns, slides. and history.

 
 
 
Priscus historically important pictures of people and views. Digital printing.
 
Wilhelm Research Institute Source of information on conservation and permanence of digital prints. (Better than chemical photography ever was.)
 
 
McCord Museum CPR Slide Show Across Canada by the CPR
 
Eric Foxley, an assortment of slides, Building the Canadian Pacific Railway
 
International Grenfell Association (IGA) Slides of Newfoundland and Labrador