I do not know but these are episodes no telesnaps exist for:
Missing episodes with no telesnaps existing
* "Marco Polo
"*episode 4
* "The Reign of Terror
"*episodes 4 & 5
* "Galaxy 4
"*- episodes 1-2 & 4
* "Mission to the Unknown
"
* "The Myth Makers
"*- all episodes
* "The Daleks' Master Plan
"*- episodes 1, 3-4, 6, 8-9 and 11-12. Twenty low quality and mostly very blurry images exist of "The Feast of Steven
" thanks to the amateur efforts of actor*Robert Jewell
*— a*Dalek operator
*who worked on*"The Daleks' Master Plan". But these aren't quite the same as telesnaps. Jewell was apparently just pointing his off-the-shelf camera at the television screen and clicking. Consequently, all are blurry to one degree or another, and in no way rival Cura's work.
* "The Massacre of St. Bartholomew's Eve
"*- all episodes
* "The Celestial Toymaker
"*episodes 1-3
* "The Invasion
"*episodes 1 & 4
* "The Space Pirates
"*episodes 1, 3-6Notes
* Although no telesnaps are known to exist from*"Marco Polo"*episode 4, contemporary BBC documentation indicates they*"were"*taken.
this was copied from
http://tardis.wikia.com/wiki/Telesnap
I hope this helps towards finding an answer as it is an interesting question.
ps, I did this on my phone so apologise in advance if it is a mess