crock9000

i was wondering if anybody knew where i could find original william hartnel dr who episodes??? or any others of the original doctors before season 27

i am a huge fan of Dr Who old and new and i was wondering if anybody knew which series of eps the time lords actually die in. In the new seasons he mentions that they were all killed in a war with the darlecs and i was curiious to when this happend. I have not seen these eps and i was wondering if anybody could help. Thanks.