I remember the little silent movie viewer things, to be sure, but I never knew that they actually tried these out with SOUND!
it even comes with three film loops! I wonder if they ever made any more of these sound loops for these devices? I also wonder if these were standard 8mm or super 8? Super 8 was certainly around in 1968, but i don't recall as to when sound was added to the "super 8 mix"?
UPDATE!!! Wait a minute! One of the photos seems to show that this was an optical sound machine! WOW!!
-------------------- "All these moments will be lost in time, just like ... tears, in the rain. "