Just be careful with any particularly rare books, or notorious books ...such as the Watchtower with all the (now deceased) class of 1914, that '7shall not pass away'. Or the 1969 AWAKE! with the infamous "stay Alive 'till 75" announcement.
I think anything like that perhaps you should offer to collectors on here or Reddit, to Kimmy, Lloyd, Rick Fearon or Atlantis etc etc People you know are buying to preserve etc