For our friends, future pilots and aircraft enthusiasts -
Presently in vacations in Europe, I visited the widow of a dear pilot friend of mine, in Belgium. While remembering the good old days, she showed us the many manuals of her late husband, which are stored on shelves in her garage, asking me what to do with these manuals, since she is moving to Spain...
They have no value and raise no security concern, since they are no longer revised and updated, however, they are extremely valuable to airline enthusiasts and pilots who are studying to become airline pilots, wishing to know about aircraft systems, and flight procedures. I have seen 707 manuals, also DC8-60/70 and 737-200 manuals...
I suggested she offers them to such individuals, and mentioned that our forum has many enthusiasts. You can communicate with her, through email - email@example.com - regarding these manuals. Her husband flew until 1991, and I am happy these books will not end in a pile of rubbish... and make some more aviation experts among you.