© 1974, 1977, 1978, 1981Now, obviously, "1974" is a reference to the LBBs, while "1981" is a reference to the B and X rulebooks. I assume "1977" is a reference to the Holmes-edited Basic Set. What about "1978?" Is that a reference to the Players Handbook, because, if it is, I find it odd, since it would suggest B/X either used material from AD&D (which is possible, though I can't think of any examples of this) or that it was a revision of AD&D (which isn't really possible, so far as I can see).
TSR Hobbies, Inc., All Rights Reserved.
Or am I missing something here?
EDIT: I briefly thought that perhaps it was a reference to the multiple editions of Holmes, each of which gets its own copyright statement in later editions of the Blue Book, but, if that were true, we'd also see a "© 1979" too, but we don't. Hmm.