Many fans and collectors are proud of their pristine, early-printing books, but I humbly submit the following for your approval. An old (not sure of the printing, but the appendices stop at N), ratty, well-loved book from 1979 or so. This is my original DMG, the one I brought to school to read on the bus, and the one I still consult to this day. Unless I need to look at Appendix O, of course.
Do you have any similarly well-loved books you still hang on to? Send pics to me at email@example.com, and maybe I’ll post a follow-up.