The chap that did the memorable design stuff for Knightmare did a crowd-funding campaign to do a book of it not so long ago, which I never found out about. As luck would have it, owing to multiple **** ups by the printer, there are some spares on general sale (and by **** up the quality's fine, the edges have just been guillotined fractionally more closely than intended).
Same guy did covers for various early home computer games.

http://www.davidrowe.net/
