When It Was Fun (short story)

 was a short story released in The Doctor: His Lives and Times.

Summary
River Song interviews Tegan Jovanka about her travels with the Fourth and Fifth Doctors.

Characters

 * River Song
 * Tegan Jovanka

Worldbuilding

 * River has a copy of Lullabies for Time Tots by Benncuiq III.

Continuity

 * Tegan mentions meeting five incarnations of the Doctor. (TV: Logopolis, Castrovalva, The Five Doctors)