Allow yourself to keep one. Put an inscription in the front mentioning when you got the book and who gave it to you. Throw the rest out. Keeping the one will r

Allow yourself to keep one. Put an inscription in the front mentioning when you got the book and who gave it to you. Throw the rest out. Keeping the one will remind you of the entire collection. And it's a nice memento of your childhood, and of those who helped you learn.