Fighting for Humankind

UNIT Fighting for Humankind was a book written by Sarah Jane Smith. Sarah Jane kept one copy of the book in her attic at 13 Bannerman Road. When she gave Maria Jackson the Verron puzzle box she took the book out of the cupboard. (TV: Whatever Happened to Sarah Jane?)

Behind the scenes

 * According to DWMS Winter 1991 the book was "heavily vetted and evidently subjected to considerable censorship".
 * In the of the video game Legacy, River Song said that not all knowledge existed in written form. Hereupon Jack Harkness asked: "UNIT: Fighting for Humankind?".