Michael Holt

Michael Holt wrote several original "interactive" Doctor Who works for younger readers in the 1980s, most notably the four Doctor Who Quiz Books.

Doctor Who Quiz Book series

 * Doctor Who Quiz Book of Science (1982)
 * Doctor Who Quiz Book of Magic (1983)
 * Doctor Who Quiz Book of Space (1983)
 * Doctor Who Quiz Book of Science (1983)

Find Your Fate series

 * Crisis in Space (1986)