Where can I find a complete list of every monster TSR has published for *D&D?
This list, which was up to date at least as of the beginning of 1996 and includes only 2nd ed. creatures, is maintained by Anthony Brooks (ne Goth), when he finds the time to update it (5165 entries and rising at the last count). One version of this list is at MPGN. If you want a copy, and your mailer can handle very large messages, send Ant a quick note requesting a copy.
