Would the introduction of the TARDIS being "partly sentient" warrant a separate entry under the First Doctor? Also the TARDIS's power source, located beneath the console, as being something you shouldn't let "escape
" as well? Both were mentioned in "The Edge of Destruction
", and the latter sort of lead on into the new series with the Bad Wolf entity
being created by the energy of the "Heart of the TARDIS
" released from within the console.
There's also this tumblr picture post about the reference to the heart of the TARDIS made by both the First and Ninth Doctors: http://unwillingadventurer.tumblr.co...of-destruction