I found a box of these things packed way in the back of a closet that had not been opened since 1978. This turned out to be the school's darkroom. They all seem to be in fair shape but when I used them with my students they were highly unimpressed as was I. If I leave the school they will most likely go into the bin. I just don't know what to do with them. We have "digital" cameras (said with reverance around public schools these days) so no one wants to even think about using manual stuff.
Mark, which cameras are you referring to? Holga or Diana.