There were people on here recently looking for donations for the cost of scanning a bunch of manuals and making PDFs out if them. I would have kicked in a few bucks but I do not have a credit card, so someone told me to just spread the word about this site...OK.
Look back a couple of pages of posts and you'll probably find it, if not maybe they'll find you. If you got something they don't, and are willing, let them have it. In fact they probably only need to borrow it. Get them back and actual paper manuals still have intrinsic value, and I have worked with them and liked it. Sometimes I print sections and tape them together into the bedsheet they resemble.
It's up to you, I would at least scan them or let others scan them. I have a couple of old ones which don't seem to be on the net, once they get it together I will send them what I have, either scans or the paper itself.
I will do everything in my power (which ain't much really) to keep good technology out of the dumpster.