United States version, 1900s

What makes this American version of the Neue Photographische Gesellschaft (NPG) viewer unique is that it does not have any advertising on it — only the U.S. patent number 720849. Additionally, rather than the generic stereoviews of landscapes, women and children, this set has 10 stereoviews of historic American places. It doesn’t have the small NPG logo but is definitely part of the NPG family of miniature tin viewers.