19 December

On 19 December 1996, the Eighth Doctor and Izzy Sinclair began travelling together in the TARDIS after having dealt with the Celestial Toymaker's attack on Stockbridge, England. (COMIC: Oblivion)

In 1841, according to markings on the walls of a cell in Fort Alexandria, Nikolai Petrovich was found to be innocent. (AUDIO: The Angel of Scutari)

In 2006, Ruby Duvall caught Mike Brack reading up on cybernetics from Communication and Control in the Animal and the Machine in the library aboard the SS Elysium. (PROSE: Iceberg)