CD and DVD releases

• In 2003, a three-CD set of the audio soundtrack was released, as part of Doctor Who's 40th anniversary. This CD set is unique in containing a map of Cathay (China) as represented during the period of the Doctor's visit to China, and also explaining historical inaccuracies. Further, the first disc in the set contains data as well as audio; the data includes MP3 files of the soundtracks without additional narration (which is provided on the CDs by William Russell, filling in details when action was mostly visual), PDF files of the narration scripts, and computer wallpaper versions of the aforementioned map of Cathay.
• The 2006 DVD box set, The Beginning, includes a condensed 30-minute form of this story as an extra on The Edge of Destruction
  The Edge of Destruction
  The Edge of Destruction is a serial in the British science fiction television series Doctor Who, which was first broadcast in two weekly parts on February 8 and February 15, 1964. The serial is distinguished as a rare "bottle episode", in that the entire story is shot on a single set, with just...
  
  disc. This version of the story, compiled by Derek Handley, consists of telesnaps set to an edited audio track.
• The original three-CD set was re-released in 2010 in The Lost TV Episodes - Collection One 1964-1965 with a bonus disc of interviews. The set was also remastered.

External links

• Marco Polo reviews at Outpost Gallifrey
  Outpost Gallifrey
  Outpost Gallifrey was a fan website for the British science fiction television series Doctor Who. It was active as a complete fan site from 1995 until 2007, then existing solely as a portal to the still-active parts of the site, including its news page and forums Outpost Gallifrey was a fan website...
  
  

• On Target — Marco Polo