Don't chuck the 1492 stuff, it could be wonderful for some other uses. You may be able to use it with your paper negatives in a different way!
Edit: Not a mystery! I don't have time to write it up now, and I'm really not quite ready, but I will soon. JNanian knows what I've been playing around with... a way to convert old photo paper to a kind of POP that is strong enough to contact print paper negatives. I will probably put the write-up over at f295.org, but I'll make sure to post a link here or in the paper negatives group. The old paper is not just good for lumen prints or photograms, but also might be excellent for retina prints, solargraphs and maybe this conversion to POP.
Last edited by NedL; 04-19-2014 at 10:22 PM. Click to view previous post history.