So, my uncle ran into some of my dad's old hiking stuff when he was cleaning out his garage, and handed it all to me. There was a bunch of nice stuff, and a bunch of total crap, but there were also two frame nylon (I think) backpacks. They're in good condition for not having been used since 1980, they just need washed. They can be separated from the metal frame for laundering, but not for carrying, unfortunately, otherwise I'd just go ahead and use them, but the frame is actually heavier than I'd like.
Would I be better off just using my old L.L. Bean pack, or are these things still useful or are they worth anything or what?