Viewmaster Collector Books

Harry Zur Kleinsmeide started collecting Viewmaster during a bout of Polio in the 1950s and became one of  foremost Viewmaster collectors and historians.  He spent 14 years writing the three, volume set, index and supplement shown below.  

Bob Shotsburger is a prominent USA collector and has put together a formidible reference work as well.  Bob is also active in the National Stereoscopic Association, a major USA stereoscopic organization.