Alternatively, you can pick up a Holmes type stereo viewer on eBay and print and mount pairs. Shooting with and processing slide film is expensive these days and mounting the pairs is do-able with a lot of patience and after purchasing the appropriate 'Realist' 5-perf mounts. A certain amount of accuracy is required but it needn't be quite as precise as some of the literature suggests. The human eye and brain are very good at compensating for dimensional errors. Producing prints for a Holmes viewer doesn't require such accurate exposure in the camera as is required for transparencies. I print my own b/w to the correct size using traditional techniques but if you have the facilities to scan your negs and print them to the correct size with a decent printer you should have no problems.
In the attached photos, the pair of a beardy bloke (me!) was taken by a German friend using a 1950s Exakta with a stereo attachment. The others are examples of my own, with one of them being colour tinted. I have the three stereo cameras shown. There's not a lot to choose between them though I seem to use the Revere the most. If yours hasn't been used for a while it may be worth running a dummy gash film through it first just to check that you can get to the end of the film and that it doesn't jam part way through. Reveres do suffer from film transport problems due to age and congealed lubricant. If yours needs the transport mechanism servicing it's not a difficult job.
Have fun!
Steve
