Here’s a collection of Japanese stereograms from from the late 19th and early 20th century. Most of them can be viewed by the usual “parallel” method — which is easier to do than to explain — but there is a set of contact prints here that you can see in 3D by crossing your eyes. You can also see if the animated .gifs here work for you; I just find them annoying. Here’s a large collection of the photographer’s work.
(Via Lynn.)