>I am planning to build a large number of lens based stereo viewers (similar
>to the Homes type stereo viewer) for an exhibition of dual image stereo
>cards, and I was wondering if anyone knows of a source for the purchase of
>stereo lenses. Either plastic or glass is fine for this project.
>
>Thank you for your assistance with this search!
>Siochain Hughes
>
You might want to try:
http://stereoscopy.com/reel3d/print-viewers.html
They have a number of inexpensive viewers and kits. Hope it helps.