Like just about every other sci-fi franchise, Doctor Who has spawned a ton of reference books (Both authorized and not), and has been since at least the 80s.
Among them:
The Doctor Who Technical Manual-A small book and not exactly technobabble-packed, but some nifty schematics of stuff from 80's Who.
Cybermen-A big book by David Banks (80's Cyberleaders) that gives both a fictional and Behind-the-scenes look at the Cybermen, with schematics of all the Cyber-outfits up to that point and a nifty timeline chart (Well, David Bank's version of their timeline) of the Cybermen.
History of the Universe-An ambitious attempt by Who writer Lance Parkin to harmonize the Doctor Who timeline. Of course it's seriously out of date but there's been several follow-ups published.
Monster guides-These books with various titles are probably the ultimate current 'monster' resource for fans of both the classic and new series. Both are covered, with a lot of BTS info, writings by RTD, photos, concept art and other cool stuff. The Ultimate Monster Guide is the compilation, although it's missing some of the material from all four books.
Among them:
The Doctor Who Technical Manual-A small book and not exactly technobabble-packed, but some nifty schematics of stuff from 80's Who.
Cybermen-A big book by David Banks (80's Cyberleaders) that gives both a fictional and Behind-the-scenes look at the Cybermen, with schematics of all the Cyber-outfits up to that point and a nifty timeline chart (Well, David Bank's version of their timeline) of the Cybermen.
History of the Universe-An ambitious attempt by Who writer Lance Parkin to harmonize the Doctor Who timeline. Of course it's seriously out of date but there's been several follow-ups published.
Monster guides-These books with various titles are probably the ultimate current 'monster' resource for fans of both the classic and new series. Both are covered, with a lot of BTS info, writings by RTD, photos, concept art and other cool stuff. The Ultimate Monster Guide is the compilation, although it's missing some of the material from all four books.