My
grandfather Robert Edgerton Carels worked for a company in Philadelphia PA that supplied oxygen for theater lighting. 
      He acquired a number of the glass slides used in the Magic Lantern shows 
        
(http://www.magiclanterns.org/
,  http://www.magiclantern.org.uk/
)
  that were popular before motion pictures came on the scene.
      All the slides are thumbnails and a click will get a larger image. 
      Enjoy.
      I received this Email the other day.
      Hello,
      
      I just wanted to say that, as a history teacher, I have been using your 
      page with information on magic lanterns for my classes.  It's been very 
      helpful; thank you for making it!
      
      Here's another good page one of my students found that you might want to 
      include:  "Online University of Photography ~ Photographic Collections" - 
      
      
      http://www.onlineuniversity.org/resources/online-university-of-photography-photographic-collections  
        
      
      It has tons of resources for photographic collections such as lantern 
      slides and stereo views.  I thought your visitors might find it beneficial 
      as well.  (Plus, I would love to show my student that the page she found 
      is incorporated on your website...makes her feel special, haha!)  Hope I 
      could help!
      
      Happy Holidays,
      Ms. Sarah Hanson
I was surprised and happy 
      that these pages were getting used and were of some help.
      Thanks Sarah.